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Q1. A mass-spring system oscillates on a horizontal frictionless surface with amplitude of 3.89 cm. If the spring constant is 250 N/m and the mass is 0.439 kg, how do you find out mechanical energy of the system?
Q2. A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 4.50 m/s in 0.852 s. What are the magnitudes of the linear impulse and the average total force experienced by a 65.0 kg passenger in the car during the time the car accelerates?
Design an amplifier using a 741 that has a gain of 20. What are the input and output impedances of your amiplifer
A 25-ohm resistor, a 55-ohm resistor, and a 75-ohm resistor are connected in parallel and placed across a 9.0-V battery. What is the current through each branch of the circuit
Two masses m1= 1 kg and m2= 2 kg are connected to each other by a massless rope that passes over a pulley with mass mp= 0.5 kg. What is the period (in s) ofsmall oscillations of this system
A 5.06 10-5 H solenoid is constructed by wrapping 63 turns of wire around a cylinder with a cross-sectional area of 9.70 10-4 m2 , Determine the change in the length of the solenoid
if the airplane somehow continues to fly as if nothing happend, where is the engine relative to airplane at the moment the engine hits the ground.
How much work is needed to push a 137- kg packing crate a distance of 2.65 m up an inclined plane that makes an angle of 27 o with the horizontal, when inclined plane is frictionless
A pilot is flying an airplane that is used for aeriel surverying to make a map of ground detail of New Jersey. If the scale of the map is to be 1:50,000 and the camera has focal length of 6in
A cardinal (Richmondena cardinalis) of mass 4.10×10^-2 kg and a baseball of mass 0.144 kg have the similar kinetic energy. What is the ratio of the cardinal's magnitude pc of momentum to the magnitude pb of baseball's momentum.
A motorcycle and rider have a total mass of 289 kg the rider applies the brakes, What is the net force (in Newtons) on the motorcycle and rider combination
Two balls attached to strings have the same mass and volume, but are made of different materials. Which ball exerts a greater net force on the block
A car traveling 90km/h slows down at a constant 0.50 m/s^2 just by "letting up on the gas." Compute the distance it travels during the third second.
High jumpers usually sustain fractures in the lower third of the fibula. The world record for the high jump is held by Javier Sotomayor (Cuba) at 2.45 m (1993). what is the stress in the fibula
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