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Three uniform spheres are located at the corners of an equilateral triangle. find the magnitude of the initial acceleration of the third sphere
A soccer ball of mass 400g is rolling at a speed of 8m/s along a flat horizontal surface. Find the rotational kinetic energy of the ball
A spacecraft flies in the horizontal direction at a speed of v=0.980c, What is the slope angle to an astronaut on the spacecraft
A 5kg sphere moves at 20m/s makes a perfectly inelastic collision with a second sphere that is at rest. What is the mass of the second sphere
Calculate the index of refraction for a piece of glass that is 3.5 cm thick if the ray inside the glassmakes an angle of 25.4 degree with respect to the normal
A bullet is fired at a stationary wooden block at 200 m/s. The mass of the block is 2kg the bullet embeds in the block during the collision. What is the mass of the bullet
Adjacent antinodes of a standing wave on a string are 15.0 cm apart. Find the maximum and minimum transverse speeds of a point at an antinode
A 206 n sign hangs from the end of a 3.30 m long bar. find the two forces exerted by bolts A and B
A 2.65 kg mass oscillates back and forth on a spring with a velocity vector that varies as a function of time according to the following v(t)=(3.95cm/s) sin [0.79 rad/s], What is the maximum speed o
A trumpet player standing at rest plays a note of frequency 1200 hertz. Determine the speed of the automobile
a single circular loop with radius of 10.0cm lies in the plane of the paper while a uniform magnetic field points out of the paper, what is the magnitude of the average induced emf
A spring of spring constant 11,000N/M is compressed by a block of mass 3kg is released from rest at the top of the incline plane. how far has the block moved down the incline
An airplane flies from city A and arrives at city B which is located 600 km North of city A it flies the first 300km/h, find the Average velocity of the plane
The position of a car at t= 20 min is x= 12 km. Its position is 69.6km when t=60min. Find the average velocity of the car
An extremely light rod 1.00 m long has a 2.00-kg mass attached to one end and a 3.00-kg mass attached to the other. find the moment of inertia of the system about the fixed axis
Two thin lenses with focal lengths of magnitude 15.0 cm, the first diverging and the second converging, are placed 12.00 cm apart. How far from the object is the final image formed
n oil film (n = 1.40) of thickness 290 nm floating on water (n=1.33) is illuminated with white light at normal incidence
An isolated conductor of arbitrary shape has a net charge of +1.2 10-5 C. What is the charge on the cavity wall
A sample of 23892U is decaying at a rate of 455 decays/s . The half-life is 4.468E9yr. compute the mass of the sample
At rest, a car's horn sounds the note A (440 Hz). The horn is sounded while the car is moving down the street, What is the speed of the car
Two ships are moving along a line due east (see figure below). The trailing vessel has a speed relative to a land-based observation point of v1 = 59.5 km/h, What frequency is monitored by the leadin
An automobile having a mass of 1,000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring with constant 5.55 106 N/m, What was the speed of the car before impact
In a crystal an electron is confined to a cubical region of length 0.5nm on a side. estimate the minimum allowed KE of the electron
Jone pulls her brother on a sled over a horizontal surface with force of 80N. The force is at an angle of 25 degree, determine the acceleration of the sled
Suppose 28.5 kg of 87.5°C water is placed in contact with 28.5 kg of 11°C water. What is the change in heat (in J) of the hot water