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A brick of mass 1.21 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle has a radius of 1.38 meters. The cable will break if the tension exceeds 49.0 Newtons. What is the maximum speed the brick can have at the bottom of the circle before the cable will break?
What is an initial velocity of the boulders
A parallel combination of an 10 resistor and an unknown resistor R is connected in series with a 13 resistor and a battery. What is the unknown resistance R
A laser beam is incident on a 600 lines per millimeter diffraction grating. determine angular deflection of the first-order bright fringe
Find the force on each side of the loop and the torque acting on loop.
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute .
A typical helium nucleus consists of two protons and two neutrons. What is the electric force between the nucleus and one of the electrons orbiting the nucleus
A rotating wheel requires 3.08-s to rotate through 37.0 revolutions. What is the constant angular acceleration of the wheel
When verticaly falling sand hits a horizontally moving cart, the cart slows. avoid any friction between the cart and the tracks. Give two reason for this, one in terms of a horizontal force acting on the cart, and one terms of momentum conservatio..
A ceiling fan with 80-cm-diameter blades is turning at 60rpm. Suppose the fan coasts to a stop 30s after being turned off.
A 12 kg box slides 4.0 {rm m} down the frictionless ramp, and then collides with a spring whose spring constant is 240 N/m.
What is an electric potential at a point
How many electrons would have to be added to one of these spheres to make it electrically neutral?
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