A 0.17- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across the table to a stop. The coefficient of friction between the block and table is 0.38. The hammer's force on the block as a function of time is well approximated by an isosceles triangle with it's base on the horizontal time axis. The length of the base is 0.0074 s and the maximum force is 48.5 N. How far does the block go? Use a graphical technique.

A thin nonconducting rod with a uniform distribution of positive charge Q is bent into a circle of radius R (see the figure). The central perpendicular axis through the ring is a z axis, with the origin at the center of the ring. What is the magnitude of the electric field due to the rod at (a) z = 0 and (b) z = ∞? (c) In terms of R, at what positive value of z is that magnitude maximum? (d) If R = 2.19 cm and Q = 4.18 μC, what is the maximum magnitude?

In constructing a large mobile, an artist hangs an aluminum sphere of mass 5.1 kg from a vertical steel wire 0.51 m long and 2.4×10−3 cm2 in cross-sectional area. On the bottom of the sphere he attaches a similar steel wire, from which he hangs a brass cube of mass 11.3 kg .

A-

Compute the tensile strain for the top wire.

Express your answer using two significant figures.

B-

Compute the tensile strain for the bottom wire.

Express your answer using two significant figures.

C-

Compute the elongation strain for the top wire.

Express your answer using two significant figures.

D-Compute the elongation strain for the bottom wire.

What is dispersion? Use dispersion to explain why white light is separtate into its individual colors when it exits a prism.

a. Consider a 1.5-kg mass of a block attached to a spring of spring constant 16.0 N/m on a frictionless table.

(i) At rest/At Equilibrium: The spring-mass system is at rest, the mass is at the equilibrium position. Calculate the potential energy (PEs), kinetic energy (KE) and total mechanical energy (Etot) of the spring-mass system.

(ii) At rest/Displaced from Equilibrium: The mass is displaced 6 cm to the left (negative X-direction) by compressing the spring, the spring-mass system is at rest at that position. Calculate the potential energy (PEs), kinetic energy (KE) and total mechanical energy (Etot) of the spring-mass system.

(iii) In motion/At Equilibrium: When the spring-mass system is released from - 6.0 cm position, it moves back to the equilibrium position. Calculate the potential energy (PEs), kinetic energy (KE), total mechanical energy (Etot) and velocity (v) of the spring-mass system as it reaches the equilibrium.

Blocks A (mass 4.00 kg ) and B (mass 6.00 kg ) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 5.00 m/s . The blocks are equipped with ideal spring bumpers. The collision is head-on, so all motion before and after the collision is along a straight line. Let +x be the direction of the initial motion of block A. Find the maximum energy stored in the spring bumpers. Find the velocity of block A when the energy stored in the spring bumpers is maximum. Find the velocity of block B when the energy stored in the spring bumpers is maximum. Find the velocity of block A after they have moved apart. Find the velocity of B after they have moved apart.

A 3100 TeV photon strikes an electron at rest and scatters by an angle of 120°. Find the frequency of the reflected photon using 2.4 pm for the Compton wavelength. Also find the kinetic energy of the electron.

solve it using eV not  joule. Please show all the work with all the steps. I want to learn how to slove this kind of problem because similar one will ibe n my final exam.

Thank you

The masses and coordinates of three spheres are as follows: 22 kg, x = 1.25 m, y = 2.25 m; 34 kg, x = -1.00 m, y = -3.25 m; 56 kg, x = 0.00 m, y= -0.75 m. What is the magnitude of the gravitational force on a 16 kg sphere located at the origin due to the other spheres?

A mass attached to a spring oscillates with a period of 3.15 s.

(a) If the mass starts from rest at x = 0.0480 m and time t = 0, where is it at time t = 6.97 s?
m?

(b) Is the mass moving in the positive or negative x direction at t = 6.97 s?

positive x direction?

negative x direction?

A 0.51 kg mass at the end of a spring vibrates 10 times per second with an amplitude of 0.14 m.
Find:

1. Velocity when it passes the equilibrium point

2. The Velocity when it is 0.09 meters from equilibrium

3. The Total Energy of The System

4. The following equation describing the motion of the mass, assuming that at t = 0, x was a maximum.

______m cos[ (_______ rad/s )t ]

You are given a vector in the xy plane that has a magnitude of 86.0 units and a y component of -55.0 units.

a.)What are the two possibilities for its x component?

b.)Assuming the x component is known to be positive, specify the magnitude of the vector which, if you add it to the original one, would give a resultant vector that is 80.0 units long and points entirely in the ?x direction.

c.)Specify the direction of the vector.

An object with mass m = 0.6 kg is dropped from the top of the building and falls 21 m down in front of the cafe.

1.1 Calculate the speed of the object as it hits the ground and calculate the time for the fall. Neglect in this question the air resistance.

In a more accurate calculation we need to take air resistance into account. In a wind tunnel the air resistance of the object has been measured giving rise to an acceleration of: a_air = 0.03v² where v is the speed of the object.

1.2 Now, taking air resistance into account, find the speed of the object as it hits the ground. Any integrals in your calculation should be calculated by hand!

1.3 Calculate the time of the fall when air resistance is taken into account. (You are allowed to use calculator to calculate occurring integrals when answering this question!)

Explain Young's double slit experiment

know the mathematical relationship between surface area and volume, and explain how surface to area volume affects heat loss. Which can be smaller endotherms or ectotherms