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Three blocks, each having a mass of 1.21 kg, are connected by rigid rods of negligible mass and are supported by a frictionless surface. Forces F1 and F2, of magnitude 4.95 N and 11.6 N respectively, are applied to the ends of the blocks as shown in the figure below. Find the forces acting on block B (the +x direction is to the right).
A. The magnitude of the force applied by the rod on the left.
B. The magnitude of the force applied by the rod on the right.
Calculate the number of electrons in a steel (iron) pinhead. The pinhead may be assumed to be spherical with diameter 2 mm
A copper rod 25 cm long having a cross-sectional area of 7.5 cm2 is used to connect a boiler maintained at 100 oC to a large block of ice at 0 oC. What is the rate of change in entropy of the ice
You bring a 350-g wrench into the house from your car. The house is 15 C warmer than the car, and it takes 2.52 kJ of energy to warm the wrench by this amount. Find (a) heat capacity of the wrench and (b) specic heat of the metal it's made from.
What is the magnitude and direction of the net force on the box?
Drag racing combines the reflexes of the driver with a powerful engine to propel a specially designed car across a quarter mile as quickly as possible. What is the time for the car to go the quarter-mile
A cart that is initially at rest moves down a slope that is inclined at 5o above the horizon, What is its final speed at the end of the slope
A shaving mirror is a concave mirror used to give someone a close up view of their face. how far is the man's face from the mirror
What is the angular frequency in rev/s of combination.
Briefly describe how the resulting interference pattern will differ for the various types of particles passing through: protons, electrons, neutrinos (mass close to zero) and photons. Assume that the distribution of particle energies is the same f..
A charge -Q is uniformly distributed along a circular arc of radius R beginning on the +y axis and ending on the -x axis. Find the electric potential at the origin
A cable is stretched horizontally across the top of two vertical poles 20 m apart. What is the tension in each cable segment
A 5.81 10-5 H solenoid is constructed by wrapping 70 turns of wire around a cylinder with a cross-sectional area of 8.10 10-4 m2, Determine the change in the length of the solenoid
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