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The figure shows a block of mass ml = 3.76 kg on a horizontal, frictionless surface and a hanging block of mass m. The blocks are connected by a cord that passes over a frictionless pulley. The cord and the pulley have negligible mass. When mi is released, it accelerates at 2.97 m/s^2 across the surface. What is the mass of the hanging block m (in kg)?
Bob and Ray push on a door from opposite sides. They both push perpendicular to the door. Bob pushes 0.63 m from the door hinge with a force of 89 N. What is the net torque on the door
Glycerine in water diffuses along a horizontal column that has a cross-sectional area of 2.2 cm2. Determine the diffusion coefficient
Suppose the skin temperature of a naked person is 34 °C while the person is standing inside a room whose temperature is 25 °C. The skin area of the individual is 2 m2.
A skier of mass 63 kilogram is pulled up a slope by a motor-driven cable. Obtain what power must a motor have to perform this task
An ac source is connected to a resistor R = 75?, an inductor L = 0.01 H, and a capacitor C = 4 ?F. What is the phase difference ? between the voltage of the source and the current in the circuit when the frequency of the source is equal to half the r..
A particle of mass M moves in one dimension along the positive x axis, under the influence of two forces. The first force is a constant force, with magnitude B and direction toward the origin. The second force is an inverse square law, with magnitude..
You ski straight down a 43.4° slope, starting from rest and traveling a distance of 10.3 m along the slope. Find your final velocity
A tornado Siren emits 3000 W of sound power, radialy equal in all directions. Assume the weakest sound likely to be heard over background noise is 55dB. What is the maximum distance the iran can be heard
A 1.5 kg object has a velocity of 5j m/s at t=0. It is accelerated at a constant rate for five seconds after which it has a velocity of (6i+12j) m/s
Please explain to me how to obtain the change in entropy of the universe of this system.
a 1 mW laser produces photons of wavelength 633 nm. How many photons per second does the laser emit
when throwing a ball vertically upward my hand moves through a distance of about 1.0 meters before the ball leaves my hand.The 0.80 kg ball reaches a max height of about 20 m above my hand. How do I find the acceleration and the force and velocity?
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