Calculate the force of gravity between a human child
Calculate the force of gravity between a human child (mass = 28 kg) and the planet Mars (mass = 6.4 1023 kg), when Mars is at its closest to Earth (distance = 8. 1010 m).
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Handle that is at an angle of 26° above the horizontal. If the normal force exerted on the suitcase is 180 N, what is the force F applied to the handle?
The hare runs at its maximum speed of 6.00 m/s toward the goal for 0.800 km and then stops to tease the tortoise. How close to the goal can the hare let the tortoise approach before resuming the race, which the tortoise wins in a photo finish? Ass
Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet
A skier is gliding along at 3.14m/s on horizontal, frictionless snow. He suddenly starts down a 20.2deg incline. His speed at the bottom is 24.6m/s. What is the length of the incline?
A proton orbits a long charged wire, making revolutions per second. The radius of the orbit is cm. What is the wire's linear charge density?
A satellite is orbiting the moon just above its surface. The centripetal force making the satellite follow a circular trajectory is just its weight, so its centripetal acceleration is about 1.622 m/s2
An electric motor rotating a workshop grinding wheel at a rate of 107 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.70 rad/s2.
Explain in detail why the dust clings to the wheels and be sure to describe forces by name and mention charging by induction and conducting or rubbing if it is appropriate, also explain what atoms on mars must be composed of?
Volcanoes on the Earth eject rocks at speeds of up to 140 m/s. Consider a 1250 m high volcano which ejects rocks in all directions. What is the maximum height above sea level reached by rocks?
A uniform bar 3 m long weighs 67lbs. A 22N weight is hanging at the end of the bar. At what point must the bar be supported for the remain horizontal ??
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