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A 50 kg woman jumps straight into the air, rising 0.8m from the ground. What impulse does she receive from the ground to attain this height?
A 95 g ice cube at 0°C is heated until 85 g has become water at 100°C, How much energy was added to accomplish the transformation
A 1460-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16300 N on the submarine, as well as a downward resistive force of 1090 N. What is the submarine's acceleration?
The loaded cab of an elevator has a mass of 3.0 x 10^3 kg and moves 145 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab.
A thin 12 cm long solenoid has a total of 490 turns of wire and carries a current of 1.9 A. find the magnitude of the field inside near the center.
The function y(x, t) = (25.0 cm) cos(?x - 26?t), with x in meters and t in seconds, describes a wave on a taut string. What is the transverse speed for a point on the string at an instant
Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 1.6% Calculate the needed percent increase in pressure
A constant horizontal force Fa pushes a 3.70 kg FedEx package across a frictionless floor on which a xy coordinate system has been drawn. it gives the package's x and y velocity components versus time t. (The vx axis is marked in increments of 1.2..
A 10.39-m ladder with a mass of 24.8 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 264 N. What is the net torque acting on the ladder
A tennis ball rolls off the edge of a tabletop 0.500m above the floor, Find the direction of the velocity of the ball just before it strikes the floor
Two narrow paralle slits illuminated by tellow light with a wavelength of \lambda = 600 nm produce fringes with a separation of 0.50 mm on a screen 2m away,
A truck has its front wheels (only) driven onto a scale and a reading of 3000 kg is obtained. How far is the center of gravity from the front wheels
An undersea research chamber is spherical with an external diameter of 3.70m. What is the buoyant force on the chamber
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