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A runner moving at a speed of 8.8 m/s rounds a bend by a radius of 25 m.
1. What agent exerts the force on the runner?
2. What is the centripetal acceleration of the runner?
a 2.0 kg ball and a 3.5kg ball are connected by a 2.5m long rigid massless rod. the rod and balls are rotating
Your car's fan belt turns a pulley at 3.15rev/s . When you step on the gas for 1.55s , the rate increases steadily to 6.00rev/s, What's the pulley's angular acceleration
a hair dryer operates at 1800 watts along with a 240 watt power resistor connected in series. Utilizing a 120 volt source, determine the individual resistance Ri and the voltage drop Vi across each compenent in the circuit
A 3.60-kg object is attached to a spring and placed on frictionless, horizontal surface. A horizontal force of 9.0 N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position, Where does this maximum speed occur
q1. what is the fundamental frequency of a 0.30 m long organ pipe that is closed at one end when the speed of sound in
Assume all temperatures to be exact, and neglect significant figures for small changes in dimension. Concrete highway slabs are poured in lengths of 9.00m. How wide should the expansion gaps between the slabs be at a temperature of 15degreeC to ensur..
Water (which can be considered to be an ideal fluid for this question) flows at a rate of 25L/min through a pipe of diameter7.0cm at a pressure of 6.0Pa. At one point in the horizontal pipe, calcium deposits reduce the cross-sectional area to 30cm2. ..
A cue ball (mass = 0.165 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.96 N·s to the ball. The ball then slides along the table and makes an elastic head-on collision with a s..
About 0.1eV is required to break a hydrogen bond in a protein molecule, what is the minimum frequecy that the radiation can have to accomplish that?
A 0.464-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. Find the momentum of the electron
A concave mirror has a focal length of 52 cm. The image formed by this mirror is in front of the mirror and located 106 cm away from it. What is the object distance
A 30nC charged particle and a 50nC charged particle are near each other. what is the magnitude of the electric field at its original position
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