Who knows how to do this

Answer:

Explanation:

.

Answer:

alleles

my answee need to be at least 20 characters long :(

Answer:

Explanation:

The kinetic energy of an object is given by the formula:

KE = 1/2 * m * v^2

where m is the mass of the object and v is its velocity.

Plugging in the given values, we get:

KE = 1/2 * 0.015 kg * (240 m/s)^2

= 1/2 * 0.015 kg * 57600 m^2/s^2

= 432 J

Therefore, the kinetic energy of the bullet is 432 Joules.

Answer:

The kinetic energy (KE) of an object is given by the formula:

KE = (1/2) * m * v^2

where m is the mass of the object and v is its velocity.

Substituting the given values, we get:

KE = (1/2) * 0.015 kg * (240 m/s)^2

Simplifying, we have:

KE = 0.5 * 0.015 kg * 57600 m^2/s^2

KE = 432 J

Therefore, the kinetic energy of the bullet is 432 Joules.

Explanation:

The maximum angular speed of the turntable to avoid slipping is option (2), √(µg/x).

The maximum angular speed of the turntable can be found by equating the centrifugal force with the frictional force acting on the block.

At maximum angular speed, the centrifugal force acting on the block is given by F = mRω², where R = x is the distance of the block from the center and ω is the angular speed of the turntable.

The frictional force acting on the block is f = µN, where N is the normal force on the block.

At maximum angular speed, the normal force N is equal to the weight of the block, N = mg.

Equating the centrifugal force and the frictional force:

mRω² = µN

mRω² = µmg

ω² = µg/R

ω = √(µg/R)

Substituting R = x:

ω = √(µg/x)

Therefore, the maximum angular speed of the turntable so that the block does not slip is given by √(µg/x).

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Answer ideal mechanical advantage

The value of x is 25 cm³.

Total mass = m1 + m2

m₁ = 0.8 × x =0.8x g

m₂ = 1 × 100 = 100g

Total = (0.8x + 1000)g

Total volume = (x +100)/(x+100) = 0.96

x  =   4/0.16

   = 25 cm³    

Hence, The value of x is 25 cm³.

Mass is the amount of depend in a physical body. it's also a measure of the body's inertia, the resistance to acceleration while a internet force is applied. An object's mass additionally determines the energy of its gravitational appeal to other bodies.

Mass can be exceptional understood as the quantity of count number present in any object or frame. The entirety we see round us has mass. as an instance, a desk, a chair, your bed, a football, a pitcher, and even air has mass. That being said, all gadgets are mild or heavy because of their mass.

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Answer:

The correct option is;

(b) The end A of the solenoid behaves like a north pole

Explanation:

According to Lenz's law we have that the induced emf direction in the solenoid due to the rapid introduction of the bar magnet will be such that the electric current induced will have a resultant magnet field that will  oppose to the movement of the north pole of the bar magnet that resulted in the magnetic field

Therefore, the opposing magnetic pole to the north pole of a magnet is a north pole and the solenoid end A will act like the north pole.

Unlike a straight wire where various segments of the wire are at varying distances from a given location, a circular loop has all charges flowing at the same distance from a point on its axis. the magnetic field is concentrated after being spread out in the case of a straight wire.

According to Faraday's Law, when a magnet is moved into a coil of wire, altering the magnetic field and magnetic flux through the coil, a voltage is produced in the coil.

The relationship between the induced magnetic flux density (B) and the magnetizing force is depicted by a hysteresis loop.

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Answer:

any of the six chemical elements that make up Group 1 (Ia) of the periodic table.

Explanation:

Answer:

Explanation: an alkali metal is a metal that is alkali

Sherwin's resulting velocity after the collision is  18.94m/sec. if his initial velocity is 12m/sec and mass of 150kg.

It is given that Sherwin has initial velocity and Lia is going to start the bumper car. It means that initial velocity of Sherwin is 12m/sec and initial velocity of Lia is 0m/sec. Since, the collision is elastic, it means that energy will not lost during the collision and momentum will remain conserved.

So, applying the law of conservation of momentum which is

Initial momentum =Final momentum

=>Initial momentum of Sherwin is=mass × velocity

=>Initial momentum of Sherwin=150 × 12m/sec

Now, initial momentum of Lia is =mass × velocity

=>Initial momentum of Lia is =95×0=0m/sec

Now, final momentum of Sherwin=0m/sec since collision is elastic

Also, final momentum of Lia is =95×v

According to the formula, we get

=>150 × 12 +0 =0  + 95×v

=>95×v=150 × 12

=>v=(150 × 12)/95

=>v=1800/95

=>v=18.94m/sec

Hence,  Sherwin velocity is 18.94m/sec.

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Starting from rest, the disc completes \(\theta\) revolutions after \(t\) seconds according to

\(\theta=\dfrac\alpha2t^2\)

with angular acceleration \(\alpha\). It completes 10 rev in 2 s, which means

\(10\,\mathrm{rev}=\dfrac\alpha2(2\,\mathrm s)^2\implies\alpha=5\dfrac{\rm rev}{\mathrm s^2}\)

Find the time it takes to complete 20 rev with this acceleration:

\(20\,\mathrm{rev}=\dfrac12\left(5\dfrac{\rm rev}{\mathrm s^2}\right)t^2\implies t=\sqrt8\,\mathrm s\approx2.83\,\mathrm s\)

so it takes approximately 0.83 s to complete 10 more rev.

Answer:

B

Explanation:

Because B/5

if i'm wrong sorry but i hope it's help^^

Answer:

20 molcues

Explanation:

10 minutes on the stove, the water molecules in the pot are in two different states , the two different states are the liquid state and the gaseous state.

Anything which has mass and occupies space is known as matter, mainly there are four states of matter solid liquid gas, and plasma .

These different states of matter have different characteristics according to which they vary their volume and shape .

As given in the problem 10 minutes on the stove , the water molecules in the pot are in two different states , the two different states are liquid state and the gaseous state ,

The gaseous state of the water molecules has higher energy and then motion as compared to the liquid state of the water molecule .

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Answer:

See below

Explanation:

Distance = 27 + 13 = 40 km

Displacement = 27 - 13 = 14 km

The correct statement about the magnetic field B is:
1. Nothing about the field can be determined unless the charging current is known.

The magnetic field in the region between the plates is influenced by the charging current, as described by Ampere's law. Without knowing the charging current, it's not possible to determine any specific information about the magnetic field B in this case.

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Answer:

1.56 seconds.

The rock will take 1.56 seconds to fall.

We have a rock.

We have to determine how long it will take for a rock to fall 12 meters.

The second equation of motion is -

S = ut + 1/2 at²

According to the question -

initial velocity = u = 0 m/s

acceleration = a = 9.8 m/s²

distance = S = 12 meters

Using the second equation of motion -

S = ut + 1/2 at²

12 = 0 + 0.5 x 9.8 x t²

12 = 4.9t²

t² = 2.45

t = 1.56 seconds

Hence, the rock will take 1.56 seconds to fall.

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The final velocity of the bat would be 10.18 m/s.

We can use the law of conservation of momentum, which states that the total momentum of a system remains constant if no external forces act on it. We can write:

(mass of bat) x (initial velocity of bat) + (mass of ball) x (initial velocity of ball) = (mass of bat) x (final velocity of bat) + (mass of ball) x (final velocity of ball)

Plugging in the given values, we get:

(1.4 kg)(15 m/s) + (0.15 kg)(-45 m/s) = (1.4 kg)(final velocity of bat) + (0.15 kg)(50 m/s)

Simplifying the equation, we get:

21 + (-6.75) = 1.4(final velocity of bat) + 7.5

14.25 = 1.4(final velocity of bat)

Final velocity of bat = 10.18 m/s

Therefore, the bat's final velocity is approximately 10.18 m/s.

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Answer:

lol While plastic and wood aren't great thermal conductors, they conduct heat faster than air does. Even if the toilet seat is at the same temperature as the air around it, it will feel colder to your but t because heat will move from your skin to the seat at a faster pace Air just doesn't conduct heat very quickly.

Explanation:

Answer:

C

Explanation:

three bricks means 3 times the weight, so 6/3=2

In RLC Series circuit, The voltage amplitude V_R across the resistor must be 16.67 volts.

In an RLC series circuit, the voltage amplitudes V_R, V_L, and V_C represent the voltage drops across the resistor (R), inductor (L), and capacitor (C), respectively. When they are equal, it means that:

V_R = V_L = V_C The maximum EMF (electromotive force) provided by the oscillator is 50V. According to Kirchhoff's voltage law, the sum of the voltage drops in a closed loop must be equal to the EMF: EMF = V_R + V_L + V_C Given that all the voltage amplitudes are equal, we can replace V_L and V_C with V_R: 50V = V_R + V_R + V_R .

Now, to solve for V_R, we combine the terms and divide by

3: 50V = 3 * V_R V_R = 50V / 3 V_R = 16.67V

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No, it is not possible to bring a third charge in from infinity without changing the total potential energy of the system.

Potential energy for the first two charger is,

\(U=\frac{1}{4\pi E_{0} } \frac{q_{1}q_{2} }{r_{12} }\)

This will change for adding a third charge no matter I it's sign, given as,

\(U=\frac{1}{4\pi E_{0} } [\frac{q_{1}q_{2} }{r_{12} } +\frac{q_{1}q_{3} }{r_{13} }+\frac{q_{2}q_{3} }{r_{23} }]\)

Hence not possible to find a place to bring a third charge in from infinity without changing the total potential energy of the system

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Answer:

30watts

Explanation:

P = IV = 5 x 6 = 30watts

Answer:

The kinetic energy of a body mass of 30 kg traveling in space at a speed of 10 m/s can be calculated with the formula KE = 0.5 * m * v^2, where m is the mass of the body and v is the speed. In this case, the kinetic energy would be equal to 0.5 * 30 * 10^2 = 1500 Joules.

The kinetic energy of a body with a mass of 30 kg and a speed of 10 m/s is  1500 kg m²/s².

In physics, the kinetic energy of аn object is the form of energy thаt it possesses due to its motion. In the case above, we are given the formula for kinetic energy:

KE = 0.5 * m * v²

where m is mass and v is speed. And we are given m = 30 kg and v = 10 m/s.

To calculate the kinetic energy, we simply plug in the values of m and v into the formula:

KE = 0.5 * 30 kg * (10 m/s)²

Simplifying the equation gives:

KE = 0.5 * 30 kg * 100 m²/s²

KE = 15 kg * 100 m²/s²

KE = 1500 kg m²/s²

Therefore, the kinetic energy of the body is 1500 kg m²/s².

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Answer:

the decrease in energy is due to a transformational in internal energy of the body in the rebound.

Explanation:

For this exercise we can calculate the initial and final mechanical energy

        Em₀ = U = m g y₁

        \(Em_{f}\) = U = m g y₂

we look for the variation of the energy

       ΔEm = Em_{f} - Em₀

       ΔEm = m g (y_{f} -y₀)

       ΔEm = m g (0.86 -1.2)

       ΔEm = -3.332 m

We can see that there is a decrease in mechanical energy, this is transformed into internal energy of the ball during the impact with the ground, this energy can be formed by several factors such as a part of the friction with the surface, an increase in body temperature or a deformation of the body; there may be a contribution from several of these factors.

In conclusion the decrease in energy is due to a transformational in internal energy of the body in the rebound.

Answer:

Please find the answer in the explanation

Explanation:

Given that a student lefts a bouncy ball to 1.2m, then releases the ball. The ball bounces back up to 0.86m. To Construct an explanation as to what happened to the energy, let first consider the difference in the two height of the ball.

The initial height = 1.2 metres

Final height = 0.86 metres

There is a loss in elastic potential energy of the ball. And the loss energy is due to the difference in the height of the ball under the gravity.

The loss in elastic potential energy is being converted to the gravitational potential energy.

The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

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A missile is launched upward with a speed that is half the escape speed The height the missile will reach is 0.5 radii of the Earth.

The height reached by a missile launched upward with a speed that is half the escape speed can be determined using the concept of gravitational potential energy.
Let's assume the escape speed from the Earth's surface is v_escape.

Since the missile is launched with a speed that is half the escape speed, its initial speed is v_initial = 0.5 * v_escape.

To find the height the missile reaches, we need to calculate the potential energy at that height.

The gravitational potential energy (PE) can be calculated using the formula PE = m * g * h, where m is the mass of the missile, g is the acceleration due to gravity, and h is the height.

Since the missile is launched from the Earth's surface, the initial height is zero. At the highest point of the missile's trajectory, its final speed is momentarily zero, so the kinetic energy is also zero. Therefore, all the initial kinetic energy is converted to potential energy.

The initial kinetic energy (KE_initial) can be calculated using the formula KE_initial = 0.5 * m * v_initial².

Equating the initial kinetic energy to the potential energy, we have KE_initial = PE.

0.5 * m * v_initial² = m * g * h

Canceling out the mass of the missile, we get:

0.5 * v_initial² = g * h

Rearranging the equation to solve for h, we have:

h = (0.5 * v_initial²) / g

Now, we know that the escape speed (v_escape) is given by the formula v_escape = √(2 * g * R), where R is the radius of the Earth.

Since the initial speed is half the escape speed, we have:

v_initial = 0.5 * √(2 * g * R)

Substituting this value into the equation for h, we get:

h = (0.5 * (0.5 * √(2 * g * R))²) / g

Simplifying the equation further:

h = (0.5 * (0.25 * 2 * g * R)) / g

h = (0.5 * 0.5 * 2 * R)

h = 0.5 * R

Therefore, the missile will reach a height of 0.5 radii of the Earth.
In conclusion, the height the missile will reach is 0.5 radii of the Earth.

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The question addresses the stability of the atmosphere and the factors that determine convective stability or instability. It also explains the difference between the adiabatic lapse rate of dry air and wet saturated air.

a) The stability of the atmosphere is determined by the temperature profile and relative densities of the air cell and atmosphere. If the temperature of the surrounding atmosphere decreases with altitude at a rate greater than the adiabatic lapse rate of the air cell, the atmosphere is considered convectively stable.

In this case, the air cell will return to its original position. Conversely, if the temperature of the surrounding atmosphere decreases slower than the adiabatic lapse rate of the air cell, the atmosphere is convectively unstable. The air cell will continue moving in the same direction.

b) The adiabatic lapse rate refers to the rate at which temperature decreases with altitude for a parcel of air lifted or descending adiabatically (without exchanging heat with its surroundings). The adiabatic lapse rate of dry air is higher (around \(9.8^0C\) per kilometer) compared to the adiabatic lapse rate of wet saturated air (around 5°C per kilometer).

This difference arises because when water vapor condenses during the ascent of saturated air, latent heat is released, reducing the rate of temperature decrease. A diagram can illustrate the difference between the two lapse rates, showcasing their respective slopes.

c) When wet unsaturated air rises from the ocean surface, its temperature decreases at a rate equal to the dry adiabatic lapse rate. However, if the ambient lapse rate (temperature decrease with altitude) is higher than the adiabatic lapse rate for dry air, a temperature inversion layer forms at higher altitudes.

In this inversion layer, the temperature increases with altitude instead of decreasing. A schematic diagram can depict the temperature changes of the wet air in comparison to the ambient temperature, showing the inversion layer.

Cumulus clouds form at the altitude where the rising moist air reaches the level of the temperature inversion layer. These clouds are formed due to the condensation of water vapor as the air parcel cools to its dew point temperature.

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Electromagnetic radiation that possesses ionizing properties apart from UV radiation is x- rays and gamma rays.

In comparison to shorter wavelengths, higher frequency waves like X and gamma rays, longer wavelengths, lower frequency waves like heat and radio have less energy.

Electromagnetic (EM) radiation is not always ionizing. Ionization only occurs in the high-frequency region of the electromagnetic spectrum, which includes X and gamma rays.

When we refer to x-rays as "ionizing," we mean that they have the special ability to strip electrons from the atoms and molecules in the material they pass through. Our body's cells' molecules can change due to ionizing activity. That action might ultimately be harmful and can lead to cancer.

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Answer: i think its a bullfrog forgive me if im wrong i dont exactly know

Explanation:

Answer:

that is an African bullfrog