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A 30.0 kg crate is being pulled across a rough horizontal surface by a cable. this cable exerts a constant tension force of magnitude 45.5 N. If the crate is traveling to the right and gaining speed at a rate of 0.40 m/s2, determine the magnitude of kinetic friction acting on the box?
Dave needs to get groceries from the store, which is a distance of D=2.8km east of his house, What is the direction of Dave's displacement for the entire trip
Describe how you could use your sound data for the car's resting frequency f0 and measured frequency fF while moving toward the policeman to calculate the speed of an approching car (vs) in order to check the reliability of the radar gun.
A vertical spring (ignore its mass), whose spring constant is 950N/m , is attached to a table and is compressed down by 0.160 m. How high above its original position (spring compressed) will the ball fly
On your way to class you are walking North up the oval. From Dale Hall you walk 180 m towards Nielsen Hall when you meet a friend heading the other direction.
A canon sends a shell of mass 35.0 kg into air with an initial speed of 135 m/s, in the direction of 55° above the horizontal. What is the work delivered by the canon on the shell
A source emits sound uniformly in all directions. There are no reflections of the sound. What is the total sound power P emitted by the source
A 10 kilogram block rests on the edge of a spinning merry-go-round (a horizontal spinning disk). Obtain the magnitude of the frictional force which keeps the block from falling off the merry-go-round
What is the rate of change of the angular speed? The moment of inertia of a rod of mass M and length L about its center of mass is ML2/12.
A cylinder of mass 6.6 kg and radius 0.10 m rolls along a level floor. Its center of mass has a speed of 0.8 m/s. Find the kinetic energy of rotation
A famous mad-physicist Dr. Strangelove tries to find out how much energy is contained in one liter of sunlight. How much energy is contained in in one liter of sunlight
Determine the magnitude and direction for the resultant
Conducting sphere A has a charge of 6C. Conducting sphere B has a charge of -3C. These spheres are touched together and then separated by a distance of D = 0.1 m. In terms of multiples of e, what is the net charge on sphere A?
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