Questions
#1 A solid, homogeneous sphere with a mass of m0, a radius of r0 and a...

#1 A solid, homogeneous sphere with a mass of m0, a radius of r0 and a density of ρ0 is placed in a container of water. Initially the sphere floats and the water level is marked on the side of the container. What happens to the water level, when the original sphere is replaced with a new sphere which has different physical parameters? Notation: r means the water level rises in the container, f means falls, s means stays the same. Combination answers like 'f or s' are possible answers in some of the cases.

r f s r or s f or s  The new sphere has a radius of r = r0 and a mass of m > m0.
r f s r or s f or s  The new sphere has a radius of r = r0 and a density of ρ > ρ0.
r f s r or s f or s  The new sphere has a density of ρ > ρ0 and a mass of m = m0.

#1.1 A solid, homogeneous sphere with a mass of m0, a radius of r0 and a density of ρ0 is placed in a container of water. Initially the sphere floats and the water level is marked on the side of the container. What happens to the water level, when the original sphere is replaced with a new sphere which has different physical parameters? Notation: r means the water level rises in the container, f means falls, s means stays the same. Combination answers like 'r or f or s' are possible answers in some of the cases.

r f s r or s f or s r or f or s  The new sphere has a radius of r < r0 and a mass of m > m0.
r f s r or s f or s r or f or s  The new sphere has a density of ρ < ρ0 and a mass of m > m0.
r f s r or s f or s r or f or s  The new sphere has a density of ρ > ρ0 and a radius of r < r0.

Please help

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A 90g ball is tied to a string so that the center its mass hangs 50...

A 90g ball is tied to a string so that the center its mass hangs 50 cm below the point where the string is tied to a support rod. The ball is pulled aside to a60° angle with vertical and released. As the string approaches vertical, it encounters a peg at a distance x below the support rod. The string then bends around the peg. If the position of the peg is low enough, the ball will move in a circle wrapping the string around the peg. a.) What is the work done by nonconservative force? And the total mechanical energy for the ball as it swing and rotate around the support rod and peg. b.) What is the smallest value of x for which the ball will move in a circle wrapping the string around the peg. Then predict what will happen to the mechanical energy, gravitational potential energy, kinetic energy, speed, and centripetal force when x reaches its minimum value. Set up a mathematical equation that satisfy the condition for minimum x and solve it based on the conditions provided

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Two light bulbs are 1.00 mapart. From what distance can these light bulbs be marginally resolved...

Two light bulbs are 1.00 mapart. From what distance can these light bulbs be marginally resolved by a small telescope with a 3.90 cm-diameter objective lens?

Assume that the lens is diffraction limited and λ=600nm.

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(only one situation) It poses a problematic situation in real life, where you need mechanical physics...

(only one situation)

It poses a problematic situation in real life, where you need mechanical physics to solve it. The problem must contain the following topics:

1) Conservation of mechanical energy.
2) Conservation of the linear or two-dimensional moment.
3) Conservation of angular momentum.

It may have some subject of additional physics, but the previous three must be in the situation.

After realizing the realistic problem, it is necessary to solve it.

Any questions write to me.
Thank you

They must make a real life situation or problem. In it, the three topics mentioned above must be found. (Those three issues must be in the same situation)

Write a problematic real-life situation in which these three issues are involved.

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A 3.5-kg object is supported by an aluminum wire of length 1.8 m and diameter 2.0...

A 3.5-kg object is supported by an aluminum wire of length 1.8 m and diameter 2.0 mm . How much will the wire stretch?

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What are magnetic poles? Why are they called north pole and south pole?

What are magnetic poles? Why are they called north pole and south pole?

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An AC generator with an output rms voltage of 18 V at a frequency of 60...

An AC generator with an output rms voltage of 18 V at a frequency of 60 Hz is connected across a 3

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When a 23.0-V emf device is placed across two resistors in series, a current of 14.0...

When a 23.0-V emf device is placed across two resistors in series, a current of 14.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel, the current through the emf device is 64.0 A. What is the magnitude of the larger of the two resistances?

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A dentist causes the bit of a high-speed drill to accelerate from an angular speed of...

A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.46 x 104 rad/s to an angular speed of 3.29 x 104 rad/s. In the process, the bit turns through 3.02 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 9.56 x 104 rad/s, starting from rest?

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the range versus angle graph should be a parabola since its the visualization of the function...

the range versus angle graph should be a parabola since its the visualization of the function in between a 0 degree minimum angle an a 90 degrees maximum angle true or false?

explain why please

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A hollow sphere is released from the top of an inclined plane of inclination theta. (a)...

A hollow sphere is released from the top of an inclined plane of inclination theta. (a) What should be the minimum coefficient of friction between the plane and the sphere to prevent it from sliding? (b) Find the kinetic energy of the sphere as it moves down a length l on the incline if the friction coefficient is half the value calculated in part (a).

Please show all steps

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Proof that the violation of the Kelvin-Planck statement leads to the violation of the Clausius statement.

Proof that the violation of the Kelvin-Planck statement leads to the violation of the Clausius statement.

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Find the magnetic field on the z axis at z +8.0 cm if (a) the currents...

Find the magnetic field on the z axis at z +8.0 cm if (a) the currents are both in the -x direction and (b) the current in the wire at y -6.0 cm is in the -x direction and the current in the wire at y +6.0 cm is in the +x direction.

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A 23.0-kg child on a 4.00-m-long swing is released from rest when the ropes of the...

A 23.0-kg child on a 4.00-m-long swing is released from rest when the ropes of the swing make an angle of 25.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. m/s (b) If the actual speed of the child at the lowest position is 2.40 m/s, what is the mechanical energy lost due to friction? J

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In class, you have seen how to calculate the maximum speed for a car to go...

In class, you have seen how to calculate the maximum speed for a car to go around a flat curve (with friction), and for a banked curve (without friction). Here, you will consider the general case. (For each question part below, include a free-body diagram.) a) (3 points) Explain briefly why the car can go around the banked curve safely even without friction, and why that is not the case for the flat curve. b) (5 points) Now consider a curve that is banked so that a car can safely take it at a speed of 85 km/h, even if there were no friction. Assuming the radius of the curve is 68 m, calculate the angle at which it has been built. c) (6 points) For the banked curve, calculate the maximum speed that a car can have to safely go through it if the coefficient of static friction is 0.3. What will happen if the car is faster? d) (6 points) For the same curve, calculate the minimum speed the car must have to safely make it through. What will happen if the car is slower?

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