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Atwood's Machine The two masses (m1 = 5.1kg and m2 = 2.5kg ) in the Atwood's machine are released from rest, with m1 at a height of 0.95m above the floor. Determine the pulley's mass
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
A vertical solid steel post of diameter d = 21.4cm and length L = 2m is required to support a load of mass m = 7650kg. What is the stress in the post
A 601N athlete standing on one foot on a very smooth gym floor lifts his body by pivoting his foot upward through a 30.0? angle, What is the tension in the Achilles tendon
A 7.0 kg box is raised from rest a distance of 3.0 m by a vertical force of 110 N. What is the total work done on the block when the block slides 1.4 m (measured along the incline)
A steel cable with total length 30 m and mass 100 kg is connected to two poles. find the wavelength of the resulting wave on the cable
The given pair of capacitors in the figure below is fully charged by a 10.0-V battery. After 1.20 ms, what is the current in the resistor
A cubic foot of lead that weighs 700 lb is submerged in water. What is the buoyant force acting on it? The volume of one cubic foot of water weighs 62.4 lb
A thin, hollow 60.0 g section of pipe of radius 15.0 cm starts rolling (from rest) down a 18.5° incline 5.40 m long. What will be its total kinetic energy at the base of the incline
Loretta travels by car from one city to another with different constant speeds between pairs of cities. Find the distance between two cities
The radius of the planet Saturn is 5.85x10 meters to the 7th power, and its mass is 5.68x10 kg to the 26th power. Find the density of Saturn
A mass m = 15 kg is pulled along a horizontal floor, with a coefficient of kinetic friction ?k = 0.1, for a distance d = 5.1 m. What is the work done by gravity as it comes to rest
A microwave oven operates at 2.4 GHz with an intensity inside the oven of 2650W/m2. What is the amplitude of the oscillating electric field
A 0.45mW laser produces a beam of light with a diameter of 1.5mm. What is the average intensity of this beam
A 2.36 kg mass with an initial velocity of v1 = aˆi, where a = 5.75 m/s collides with, Find the final speed of the composite mass
0.150kg stone rests on a frictionless, horizontal surface. A bullet of mass 5.00g , traveling horizontally at 380m/s , Compute the direction of the velocity of the stone after it is struck
To develop muscle tone, a woman lifts a 4.00 kg mass held in her hand. She uses her biceps muscle to flex the lower arm through an angle of 60.0°. How much work does she do
A 38.0-kg child swings in a swing supported by two chains, each 2.90 m long. The tension in each chain at the lowest point is 418 N. Find the child's speed at the lowest point
David is driving a steady 21.0m/s when he passes Tina, who is sitting in her car at rest. How far does Tina drive before passing David
A proton is moving toward a wire that carries current in the direction shown. What is the direction of the force on the proton
In the sketch, the small hydraulic piston has a diameter of 2.3cm. how many newtons of force are exerted by the large piston
Santa loses his footing and slides down a frictionless, snowy roof that is tilted at an angle of 30.0â. what is his speed as he leaves the roof
Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 35.0mph and half the distance at 73.0mph. What is her average speed on the return trip
A 2,200-kg pile driver is used to drive a steel I-beam into the ground. calculate the average force the beam exerts on the pile driver
An 8.0 kg block is released from rest, v1 = 0 m/s, on a rough incline, which has an angle of 40 from the horizontal. How much work gravity do on the block during this process