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Two automobiles, each of mass 1000kg, are moving at the same speed, 20 m/s, when they collide and stick together, In what direction and at what speed does the wreckage move (a)if one car was driving north and one south? (b) if one car was driving north and one east
a small segment of wire contains 10 nc of charge. the segment is shrunk to one-third of its original length. a proton
The position of an object connected to a spring varies with time according to the expression x = (5.9 cm) sin(8.7?t). (a) Find the period of this motion. s (b) Find the frequency of the motion. Hz (c) Find the amplitude of the motion. cm (d) Find the..
a 15cm diameter circular wire loop carries a current of 2.4a .a find the torque on the loop in a 1.4t magnetic field
A soccer ball is kicked with an initial horizontal velocity of 15.0 m/s and an initial vertical velocity of 14.0 m/s. What is the maximum height the ball goes above the ground
q1. a student in a parked car honks the horn that has a proper frequency of 310.00 hz. an observer in an approaching
Oscillation of a 500 Hz tuning fork sets up standing waves in a string clamped at both ends. The wave speed for the string is 430 m/s. What is the length of the string
Practical steam engines utilize 475°C steam, which is later exhausted at 300°C. What is the overall efficiency of the two engines
A 0.04-kg baseball traveling in a horizontal direction with a speed of 16 m/s hits a bat and is popped straight up with a speed of 15 m/s. what was the average force of the bat on the ball
A horse drags a 100 kg sled a distance of 4 km in 20 minutes. What is the coefficient of sliding friction between the sled and the ground
q1. a typical major league fastball is thrown at about 99 mph and with a spin rate of 103 rpm. if the distance between
Suppose that potons are fired towards the large flat side of a positively charged conducting plate, How long does it take for the protons to hit the plate
A soccer ball is kicked with an initial speed of 28 m/s at an angle of 22° with respect to the horizontal. Find the maximum height reached by the ball
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