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The center of gravity of a 5 kg lower leg is 18 cm from the knee. When pivoted at the knee and allowed to swing, the oscillation frequency is 1.6 Hz. Find the moment of inertia of the lower leg.
The elevator is firstly at rest. How far does the elevator move even as accelerating to full speed from rest.
A telephoto lens consists of a converging front lens of focal length f1 and diverging back lens of focal length f2 separated by a distance d. Compute the effective focal length of the lens system
A 4 kg uniform cylinder is released at the top of a 1.54 m 24° incline. What is its velocity when it reaches the bottom
Scientists want to place a 3 × 103 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 1.8 times the radius of Mars above the surface of the planet, What is the force of attraction between Mars and the satel..
Light from a He-Ne laser of wavelength 633 nm passes through a circular aperture. It is observed on a screen 4.0 m behind the aperture. compute the diameter of the hole
A 166 gram hockey puck has a initial velocity of vx = 27 m/sec and vy = 16 m/sec. What is the impulse delivered to the hockey puck in the x direction
A 2200kg sport utility vehicle travelling at 96 km/h can be stopped in 0.20 s if it hits a concrete wall. Suppose a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash a..
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y(x,t)=(6.5 mm)sin(28.0x -4.0 s-1 * t+0.350 rad),with x in meters and t in seconds. what is the resultant amplitude of the two wa..
A copper cable (p=1.7*10^-8ohms*m) is designed to carry a current of 300A with a power loss of 2W/m. What is the required radius of this cable
1. which of the following compounds are insoluble in water?pbso4 beoh2 mgno32 alpo4 nh4i all are insoluble2. what is
The value of acceleration found in (b)iii, along with numerical values for the given quantities and your answer to (c), can be used to determine the rotational inertia of the pulley. The pulley is removed from its support and its rotational inerti..
A 0.250-kg piece of aluminum that has a temperature of -158 °C is added to 1.4 kg of water that has a temperature of 2.6 °C. find the mass of water that has been frozen into ice
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