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A man stands on the roof of a 13.0 {\rm m}-tall building and throws a rock with a velocity of magnitude 30.0 {\rm m}/{\rm s} at an angle of 30.0^\circ above the horizontal. You can ignore air resistance.
A. Calculate the maximum height above the roof reached by the rock
B. Calculate the magnitude of the velocity of the rock just before it strikes the ground.
C. Calculate the horizontal distance from the base of the building to the point where the rock strikes the ground
Illustrate what is the concentration of sodium and chloride ions at a distance 3 angstroms from protein surface.
A small coil has a cross section of 5.5 cm2 and consists of 8 turns of wire. If the loop carries a current of 180 mA, what is the torque required to hold the loop
A car wheel with a moment of inertia of 7.85 kg.m^2 is accelerating from 2160 rpm to 5040 rpm in a time of 10.0s. calculate The work done in raising the rotation frequency
A 24 ? resistor is frozen in a 0.50 kg block of ice with its two leads exposed. The resistor is then attached to a 9.0 V battery. how many hours does it take to completely melt the ice
Three charges are fixed to an x, y coordinate system. A charge of +20 µC is on the y axis at y = +3.0 m, Determine the magnitude and direction of the net electrostatic force on the charge at x= +3.0 m
Compare 900 on the AM dial to 90 on the FM dial. Which has the longer wavelength? By what factor is it larger
a runoff for a truck consists of aa 500 meter horizontal runway with course gravel to stop the truck. the mass of the
After the first spring compresses a distance of 33cm, second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 53.0 cm after first contacting the two-spring system. Find the car's initial spee..
A 1.1 kg birdfeeder hangs from a horizontal tree branch. The birdfeeder is attached to the branch at a point that is 1.0 m from the trunk. where the branch attaches to the trunk
You have just landed on a planet. You take out a block of mass 245g , release it from rest from a height of 14.01m, What is the acceleration of gravity on this planet
A camera takes a perfectly exposed picture when the lens diaphragm is set to f/4 and the shutter speed is 1/250 s, what should the new shutter speed be so that the exposure is still correct
A sound wave from a siren has an intensity of 86.2 W/m2 at a certain point, compute the intensity level of the sound wave due to the ambulance
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