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an electron is moving at a particular instant parallel to a wire with a speed of 3 times 105 ms the wire carries a
in a jump spike a volleyball player slams the ball from overhead and toward the opposite floor controlling the angle of
five grams of nitrogen gas at an initial pressure of 30 atm and at 20 c undergo an isobaric expansion until the volume
doug pushes a 460 kg crate up a 170-m-high 20 circ frictionless slope by pushing it with a constant horizontal force of
a baggage handler throws a 140 kg suitcase horizontally along the floor of an airplane luggage compartment with an
a slide projector needs to create a 990 -high image of a 200 -tall slide the screen is 290 from the slidewhat focal
problem a candle is placed 2236 cm in front of a convex mirror when the convex mirror is replaced with a plane mirror
the nearpoint of an eye is 55 cm a corrective lens is to be used to allow this eye to clearly focus on objects 25 cm in
suppose we have a gas in thermal equilibrium at temperature t each molecule of gas has a mass ma what is the ratio of
a person sees clearly wearing eyeglasses that have a power of -254 diopters and sit 15 cm in front of the eyes if the
the distortion of earths crustal plates is an example of shear on a large scale a particular crustal rock has a shear
bone has a youngs modulus of about 180 1010 pa under compression it can withstand a stress of about 155 108 pa before
a person is making homemade ice cream she exerts a force of magnitude 16 n on the free end of the crank handle and this
a 200g ball is tied to a 10 meter long string and released from rest 60 degree angle it swings down and at the very
two carts of unequal mass massagtmassb move on parallel firctionless horizontal tracks both carts start from rest and
a 10 g steel marble is spun so that it rolls at 150 rpm around the inside of a vertically oriented steel tube the tube
a 30-kg 14-cm-radius cylinder initially at rest is free to rotate about the axis of the cylinder a rope of negligible
a deep-space probe moves away from earth with a speed of 074c an antenna on the probe requires 30 s in probe time to
an astronaut is traveling in a space vehicle that has a speed of 0500c relative to earth the astronaut measures his
an astronaut at rest on earth has a heartbeat rate of 72 beatsmin when the astronaut is traveling in a spaceship at
two hockey pucks a and b on a frictionless surface are coverd with velcro both pucks have a mass of 50kg puck a is
pendulum a small rock with mass 022 kg is fastened to a massless string with length 070 m to form a pendulum the
a plane electromagnetic wave with wavelength 18 m travels in vacuum in the positive direction of an x axis the electric
a 59 h coil with a resistance of 84960 ohm is in series with a 373824 ohm resistor this circuit is connected to an ac
a concave makeup mirror is designed so the virtual image it produces is four times the size of the object when the