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A woman of 61 kg is held firmly in the seat of her automobile by a lap and shoulder seat belt. Through a collision, the automobile decelerates from 59km/hr to 0km/hr in 11 seconds. What is the magnitude of the average horizontal force that the seat belt exerts on the woman?
Interpretation of Distance-time Graph 1. Which car is ahead and by how much distance after 3 hours? 2. Which car stops moving after 3 hours?
A solid sphere of mass m and radius r spins about a horizontal axis with a period T. Find the size of the torque acting on the sphere
A person can be killed if a current as small as 50 mA passes near the heart. An electrician is working on a humid day with hands damp from perspiration. What potential difference between the two wires
A long, narrow steel rod of length 2.5000 m at 25 C is oscillating as a pendulum about a horizontal axis through one end. what will be the fractional change in its period
A ball is thrown horizontally off the top of a building with a height of h=22.5m. What is the horizontal distance the ball travels before it hits the ground
question 2.25 moles of n2 in a state define t1 300 k and vi 1.00l undergoes an isothermal reversible expansion until
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 49.0. Find the maximum height reached by the rocket
In an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression, x = 3.00 cos 5t + ? 5, Find the period and amplitude of the motion
The magnetic field associated with an electromagnetic wave has amplitude of 1.8 μT. What is the intensity of this wave? What is the radiation pressure associated with this wave?
A steel wire with mass 25.5 g and length 1.16 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m, Calculate the wavelength of the string's vibration
q1. a typical major league fastball is thrown at about 99 mph and with a spin rate of 103 rpm. if the distance between
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistles is444 Hz when the train is approaching him and 440 Hz when the train is receding from him. Using these frequencies, he c..
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