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1. Two 4.7 kg physical science textbooks on a bookshelf are 0.27m apart. What is the magnitude of the gravitational attraction between the books?____N
2. A worker pushes horizontally on a large crate with a force of301 N, and the crate is moved 4.6m. How much work wasdone?_____J
3. While rearranging a dorm room, a student does 311 J of work inmoving a desk 2.6 m. What was the magnitude of the appliedhorizontal force?_____N
A person ca throw a 1.00 Kg stone at a speed of 15.0 m/s. He moves his hand forward 0.75 m while doing so. How much work does the person do on the rock
A spring (k=100N/m) is squished x=.40 m with a mass m=1 kg held against it. With what speed v does the mass exit the rough region
Imagine holding an air-filled 2 L soda bottle (V = 2000 cm3) underwater. You have used a scale to determine that the mass of the soda bottle is mbottle = 50 g. what force is required to hold it underwater
a 92-kg fullback, running at 5.0 m/s,attempts to dive directlyacross the goal line for a touchdown. what is their velocity after the collision
An elevator has mass 600 kg, not including passengers. The elevator is designed to ascend, at constant speed, What is the maximum number of passengers that can ride in the elevator
Some species use echolocation to determine the position and velocity of objects and prey. What is the sound frequency of the echo the bat hears
How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 9.00 cm2
two identical diverging lenses are separated by 6.0 cm. each lens has a focal length of -12 cm. an object is placed 10
The binding energy of an electron in a crystal lattice is 1.2 x10^(-4) eV. Use the uncertainty relation to estimate the size of the spread of the electron wave function.
A hardworking ant must supply 0.00805 N to pull a small piece of fruit at constant velocity over a distance of 9.60 cm up a small hill to the entrance of the colony. calculate the work done by the ant by pulling the piece of fruit up the hill
Two same-size metal posts, one aluminum and one copper, are subjected to equal shear stresses. which post will show the larger deformation angle
The flywheel of a gasoline engine is required to give up 530J of kinetic energy while its angular velocity decreases from 690 rev/min to 550 rev/min. What moment of inertia is required
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