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A compass needle in a uniform magnetic field of 0.30 T experiences a torque of 0.050 N * m when it points in a direction 45 degrees away from the direction
An object is thrown horizontally from the top of a building at a height of 32.5 m above the ground, it hits the ground 65m from the base of the building.
A 14.0 box slides 4.0 m down the frictionless ramp shown in the figure, then collides with a spring whose spring constant is 180 .
An atom of an element with an atomic number of 95 and a mass number of 241 undergoes decay by emission of an alpha particle. What are the atomic number
A spaceship of mass 2.3*10^6 kg is cruising at a speed of 4.4*10^6 m/s when the antimatter reactor fails, blowing the ship into three pieces.
Describe the movement of electrons required to develop electrical current.
What initial angular velocity of the flywheel was needed to store the amount of energy calculated in part b)?
A uniform board of mass m and length L is pivoted on one end and is supported in the horizontal position by a rope attached to the other end.
Rutheford successfully used classical mechanics to account for the scattering pattern of alpha particles by heavy nuclei: he treated the alpha particle
A transverse traveling wave on a cord is represented by D = 0.48 sin (5.6x +84t) where D and x are in meters and t in seconds.
A welded railway line, of length 15 km, is laid without expansion joints in a desert where the night and day temperatures differ by 50 K.
If she aims her body directly across a 150 m wide river whose current is 0.55 m/s, how far downstream.
We are given a cone of height H and angle alpha with constant density. We want to calculate the center of mass using triple integrals in cylindrical coordinates
The stairs are angled at 45° pointing in the direction of motion as shown. What is the velocity of the passenger relative to the water?
A ball is shot from the ground into the air. At a height of 9.1m, the velocity is observed to be V = 7.9i + 5.1j in m/s (i horizontally, j upward).
How many alpha particles are emitted per minute by 1cm^3 of 222^Rn monoatomic gas at a temperature of 27 degrees Celsius and a pressure
Compute the moment of the 100-lb force about A, (a) by using the definition of the moment of a force, (b) by resolving the force
Find its position vector in terms of the vector's magnitude and orientation. What is the magnitude?
What is the minimum coefficient of static friction required between the crate and truck bed, if it is not to slide forward?
What was the average speed of the car between 2 pm and 4pm? That is, what was the average speedometer reading in miles/hour?
Consider a force F acting on a particle that moves with a velocity v for F=(6N)i - (5N)j and v = (-5 m/s)i + (4 m/s)j
Automobile engine slows down from 4500 rpm to 1200 rpm in 2.5 s. Calculate (a) its angular acceleration, assumed constant.
A person about to jump from a 1.6m high platform wants to limit the average stopping force on landing to 12 times her weight.
The simple pendulum in a grandfather clock is 1.0 m long. What are (a) the period and (b) the frequency of this pendulum?
Determine the impulse of his foot on the ball. Neglect the impulse caused by the ball's weight while its being kicked.