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a 145 gram baseball is dropped from a tree 140 meter above the ground if it hits the ground with a speed of 800 ms
determine the force exerted on a rocket given that the propelling gases are expelled at a rate of 1500 kgs with a speed
a man is to be released from rest on a swing pulled away from the vertical by an angle of 221 degree the two frayed
assume the coefficient of static friction between the tires and the road on a car is 0744 and the car has no negative
a 30 kilogram block slides with a speed of 11 ms on a frictionless horizontal surface until it encounters a springa if
determine the speed of a satellite moving in a stable circular orbit around the earth at a height of 2500 kilometer
a 520 kilogram ice skater spins about a vertical axis through her body with her arms horizontally outstretched making
at a playground a 22 kilogram boy plays on a slide that drops through a height of 21 meter the boy starts at rest at
determine how much tension must a rope withstand if it is used to accelerate an 1100 kilogram car vertically upward at
a centrifuge in a medical laboratory rotates at an angular speed of 3500 revmin when switched off it rotates through
beams of high-speed protons can be produced in guns using electric fields to accelerate the protonsa determine what
a particle with a charge of -250times10-8nbspcnbspis moving with an instantaneous velocity of magnitude 400nbspkms in
a battery with an emf of 120 volt shows a terminal voltage of 1182 volt when operating in a circuit with three 93 w
two railroad cars each of mass 59000 kilogram are traveling 85 kmh toward each other they collide head-on and come to
a vertical spring ignore its mass whose spring constant is 895 nm is attached to a table and is compressed down by 0150
heather in her corvette accelerates at the rate of 310i - 200jms2 while jill in her jaguar accelerates at 100i 310j
a helicopter lifts a 75 kilogram astronaut 12 meter vertically from the ocean by means of a cable the acceleration of
a superconducting solenoid has 30427turnsm and carries a current of 2000 amp find the magnetic field generated inside
in an r-l-c circuit r 400 ohm xc 240 ohm xl 580 ohm the average power consumed in the resistor is 600 watt determine
a boy rolls a ball on a level floor 35 meter to another boy if the ball makes 150 revolutions evaluate what is its
when an 820 kilogram adult uses a spiral staircase to climb to the second floor of his house his gravitational
a box of canned goods slides down a ramp from street level into the basement of a grocery store with acceleration 063
a child of mass 600 kilogram is rescued from a hotel fire by leaping into a firefighters net the window from which he
a solenoid has a circular cross section with a radius of 3 centimeter 800 turns and a length of a 70 centimeter it sits
the bohr model of the hydrogen atom pictures the electron as a tiny particle moving in a circular orbit about a