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A rock is projected of the edge of the top of a building with an initial velocity of 12.2m/s at an angle of 53 degree above the horizontal. The rock strikes the ground 25 meter from the base of the building. Suppose that the ground is level and the side of the building is vertical. Determine how tall is the building?
an rlc series circuit is in resonance at 75hz . if you halve both the inductance and capacitance whats the new
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.2 mm, What is the resistance ratio RA/RB , measured between their ends
A proton accelerates from rest in a uniform electric field of 620 N/C. At some later time, its speed is 1.16 106 m/s. what is the magnitude of acceleration of the proton
a child sits on the outer edge of a 18 m radius merry-go-round. if the parent applies a tangential acceleration of 2.5
A toy cannon uses a spring to project a 5.31-g soft rubber ball. The spring is originally compressed by 4.97 cm and has a force constant of 8.09 N/m. At what point does the ball have maximum speed
Which statement is true concerning the magnitude of the net force on the plane.
The brightest star in the night skyis Sirius, which is at a distance of 8.30×1016 m. how far back in time are we seeing it
an observer stands 25 m behind a marksman practicing at a rifle range. the marksman fires the rifle horizontally the
When an ambulance is stationary, the siren gives off a sound at a frequency of 500 Hz. What is the frequency of the stationary siren as perceived by an observer
A yo-yo is made from two uniform disks, each with mass M/2 and radius R, associated by a light axle of radius r(R>r). Since the axle is nearly mass less, the total mass of the yo-yo is M. A light, thin string is wound several times around the axle.
A pebble is released from rest at a certain height and falls freely, reaching an impact speed of 2 m/s at the floor. What is its speed at the floor
A .250kg ball is thrown horizontally at 16.8m/s Find its change in the magnitude of the momentum
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