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Maria throws Jackson a life preserver attached to a rope. Jackson's mass is 235 kg.
(a) If Maria pulls Jackson upward with an acceleration of 3.5 m/s^2, how much tension is in the rope?
(b) After the initial acceleration, she continues pulling him upward with a constant velocity. What is the Net Force on Jackson?
a 0.22 kg block of cheese lies on the floor of a 870 kg elevator cab that is being pulled upward by a cable through distance d = 2.3 m. how much work is done on the cab by the force from the cable
An Earth satellite has a speed of 28100 km/hr when it is at its perigee, 281 km above Earth's surface. Find the apogee distance
Two small silver spheres, each with a mass of 12.0 g, are separated by 1.00 m. Calculate the fraction of the electrons in one sphere
As part of a carnival game, a 0.503-kg ball is thrown at a stack of 19.3-cm tall, 0.423-kg objects and hits with a perfectly horizontal velocity of 10.6 m/s, what is the moment of inertia of the object
An insulating membrane separates conducting fluids inside and outside an unmyelinated axon, a type of nerve fiber. Find the surface area and capacitance of the axon
A 58-kg skater sliding due northeast at an initial speed of 1.5 m/s runs into a snow bank and comes to rest in a time interval of 0.38 s, What is change in the kinetic energy of the skater
A bullet of mass 5.00g is fired horizontally into a wooden block of mass 1.30 kg resting on a horizontal surface. What was the initial speed of the bullet
the block diagram of the control of an electric heating system. the heater is driven from a voltage-controlled power
A charge of 25 nC is uniformly distributed along a circular arc, What is the magnitude of the electric field at the center of the circle along with the arc lies
Water is poured into a container that has a leak. The mass m of the water is given as a function of time t by m = 4.5t0.8 - 3.3t + 21, with t ? 0, m in grams, At what time is the water mass greatest
The number of turns in the primary and the secondary of a step-up transformer are 93 and 439 respectively. what is the output voltage of this transformer
A golf ball of mass 0.045 kg is hit off the tee at a speed of 33m/s. Find the average force exerted on the ball by the golf club
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