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a 20 Kg block slides along a frictionless table at 20 m/s. Itencountes a 40 Kg block whereupon the blocks stick together. What will be the final momentum and kinetic energy of the joined blocks?
A particle is executing simple harmonic motion with an agular frequency w=27.8Hz. What are respectively the period and frequency of this vibration?
A 62kg hiker starts at an elevation of 1500m and climbs to the top of a 3500m peak, What is the minimum work required of the hiker
a 900-kg car is moving at 33.3 ms. a braking force of -7548 n is applied for 2.70 s. what is the velocity of the car
An explosive shell, with total mass 80 kg is launched vertically into the air from a mortar. The shell explodes in flight and breaks into two parts with masses of 30 kg and 50 kg, Determine where the other portion of the shell landed
A golf ball is struck at ground level. The speed of the golf ball as a function of time is shown in the figure below, where t = 0 at the instant the ball is struck. What is the maximum height above the ground level attained by the ball
Opening champagne. In a bottle of champagne, the pocket of gas (primarily carbon dioxide) between the liquid and the cork is at pressure of p = 5.95 atm. When the cork is pulled from the bottle, the gas undergoes an adiabatic expansion until its p..
the plates of a parallel plate capacitor have an area of 90 cm2 each and are separated by 2.5 mm. the capacitor is
a swimmer moves through the water at an average speed of 0.29 ms. the average drag force is 115 n. what average power
A roller-coaster car may berepresented by a block of mass 50.0 kg. The car is released fromrest at a height h = 45.0 m above the ground and slides along africtionless track. The car encounters a loop of radius R = 15.0 mat ground level, as shown.
An object with a mass of 5.00 g is moving to the right at 14.0 cm/s when it is overtaken by an object with a mass of 28.0 g , determine the speed of each object after the collision
Estimate the average force exerted by a shot-putter on a 7.4 kg shot if the shot is moved through a distance of 2.5m and is released with a speed of 11m/s
a 770 n student stands in the middle of a frozen pond having a radius of 6.3 m. he is unable to get to the other side
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