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q1 a race car has a mass of 718 kg it starts from rest and travels 450 m in 30 s the car is uniformly accelerated throughout the entire time what net
q1 an electron with a speed of 612 times 108 cms in the positive direction of an x axis enters the electric field of magnitude 270 times 103 nc
q1 a 0850 kg block is attached to a spring with spring constant 160 nm while the block is sitting at rest a student hits it with a hammer and almost
q1 what is an acceleration of two falling sky divers mass 1200 kg including parachute while the upward force of air resistance is equal to one-fourth
q1 a car carrying a 77-kg test dummy crashed into a wall at 27ms and is brought to rest in 01 s demonstrate that the average force exerted by the
q1 two balls are rolled off a tabletop that is 088 m above the floor ball a has a horizontal velocity of 50 ms and that of ball b is 80 msa how long
q1 a jetliner can fly 532 hours on a full load of fuel without any wind it flies at the speed of 220 ms the plane is to make a round-trip by heading
q a 2500-kg sport utility vehicle travelling at 92 kmh can be stopped in 025 s if it hits a concrete wall assume a 60 kg person was in the car that
q1 a 050-kg object is attached to an ideal massless spring of spring constant 20 nm along a horizontal frictionless surface the object oscillates in
q1 a stone of mass 031 kg is tied to a string of length 085 m and is swung in the horizontal circle with speed v the string has a breaking-point
q1 a rock of mass m 17 kg is tied to a string of length l 16 m and is twirled in a vertical circle the speed v of the rock is constant that is it
q two spherical conductors are connected by a long conducting wire and a total charge of 200 muc is placed on this combination one sphere has a
q1 a metal sphere has a charge of 89x10-6c what is the net charge after 88 x 1013 electrons have been located on itq2 a helium-neon laser emits light
q1 determine currents i1 i2 and i3 r5 20 ohms suppose the internal resistance of each battery is r 10what is the terminal voltage of the b65v
q1 a 25- sample of an ideal gas with is at 250 and 50 the gas is compressed isothermally to one-third of its original volume then heated at constant
q1 the two parallel plates in the figure below are 20 cm apart and the electric field strength between them is 21 104 nc an electron is launched at a
q two perpendicular long straight wires both of which lie in the plane of the paper the current in each of the wires is i 45 a in the drawing dh
q1 a roller-coaster car speeds down a hill past point a where r1 100 m and then rolls up a hill past point b where r2 130 m as shown belowa the car
q1 two packages at ups start sliding down a ramp 40 degrees from the horizontal package a is sliding down in front of package b package a has a mass
q1 an airplane is flying with the velocity of 850 ms at an angle of 200 degrees above the horizontal when the plane is a distance 107 m directly
q1 a heavy piece of hanging sculpture is suspended by a 94 cm long 46 g steel wire when the wind blows hard wire hums at its fundamental frequency of
q1 the loaded cab of an elevator has a mass of 3000 kg and moves 181 m up the shaft in 23 s at constant speed at what average rate does the force
q1 if one end of a heavy rope is attached to a light rope and wave is sent down the heavy rope what would happen to the frequency speed and
q1 a dental bracket exerts the horizontal force of 800 n on a tooth at point b what is the torque on the root of tooth about point aq2 a pinball
q1 a 370-kg sailboat has an acceleration of 087 ms2 at an angle of 64deg north of east find the magnitude and direction of the net force that acts on