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For one patient, it is desired that 0.10 J of proton energy be deposited in a tumor. To create the proton beam, the protons are accelerated from rest through a 15MV potential difference. What is the
Heat transfer between the the contents of the tank and the surroundings is negligible. Determine the final temperature in the tank.
A 81.0 skydiver can be modeled as a rectangular "box" with dimensions 18.0x 35.0 x 185 . Use the falling cylinder model for solving the problem. What is his terminal speed if he falls feet first?
If the coefficient of kinetic friction between the car's tires and the road is 0.76, what was the speed of the car when the brakes were applied. (The car is old and does not have anti-lock brakes!)
The coefficient of static friction between a block of wood of mass 26.4-kg and a rough table is 0.89. The table is slowly tilted until the block of wood starts to slide down the surface. At what ang
The volumetric flow rate of refridgerant entering is 2.05 m^3/min. The power input to the compressor is 20.7 Kj per kg of regridgerant flowing. Neglecting kinetic and potential energy effects, deter
How many moles of gas will be in the container at the final temperature? Give your answer to three significant figures.
A spacecraft is in orbit around a planet. The radius of the orbit is 2.9 times the radius of the planet (which is R = 71547 km). The gravitational field at the surface of the planet is 21 N/kg. What
(a) What is the magnitude of the electrostatic force on the block and (b) what angle does that force make with the positive x direction? If the block is released from rest at the origin at time t =
If only one particle is released from rest, while the other three remain stationary at the three other corners of the square, what is the final speed of the released particle once it is very far awa
What is the maximum distance between centers of mass when the atoms collide? This gives you the minimum initial speed needed for a collision.)
(a) Calculate the x-, y-, and z-components of the electric field. (Use any variable or symbol stated above as necessary.) x-component Ex = y-component Ey = z-component Ez = (b) At which points is th
How much work does it take to move a tiny +3.50-µC charged ball of mass 1.70 g from very far away to the center of the ring? (Assume the ball is moved along the axis of the ring.)
Is it necessary to take a path along the axis of the ring? (I.e. is the amount of work done dependent on the path taken to bring the ball to the center of the ring?) Yes No Why?
Calculate the value of E. V/m (c) A negative point charge q = -0.180 µC is moved from b to a. Calculate the work done on the point charge by the electric field.
In this problem we consider two charges placed on the y-axis and calculate the resulting potential for points on the y-axis. A positive charge, +q, is placed at the point (0,-a) and a negative charg
A 1,488-kg car is moving down a road with a slope (grade) of 21% while speeding up at a rate of 1.5 m/s^2. What is the direction and magnitude of the frictional force? (define positive in the forwa
Calculate the ratio of the rates of stimulated emission to spontaneous emission for a HeNe laser operating at 632.8nm. The laser has an output power of 1mW and a beam diameter of 1mm.
You swing a 3.00 kg stone in a circle, using the full length of a thin 75.0cm rope. At what speed should you swing it so its acceleration will be 9.8 m/s^2?
When the dried-up seed pod of a scotch broom plant bursts open, it shoots out a seed with an initial velocity of 2.68m/s at an angle of 63.0 degree above the horizontal. if the seed pod is 0.460m ab
A racket ball is struck in such a way that it leaves the racket with a speed of 4.89m/s in the horizontal direction. When the ball hits the court, it is a horizontal distance of 1.97m from the racke
A golf ball is struck with a five iron on level ground. It lands 92.7m away 4.20s later. What was (a) the direction and (b) the magnitude of the initial velocity?
The dolphin passes through the center of a hoop before returning to the water. If the dolphin is moving horizontally when it goes through the hoop, how high above the water is the center of the hoop
Assuming that this star is essentially at the edge of the galaxy, each of the stars in the galaxy has a mass equal to that of this star, and the stars are distributed uniformly in a sphere about the