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A person exerts a horizontal force of 190 N in the test apparatus shown in the figure. Find the horizontal force that his flex or muscle exerts on his forearm.
Two men decide to use their cars to pull a truck stuck in mud. What is the net forward force exerted on the truck in the direction it is headed
Find out the lengths of acceleration and deceleration phases
In an experiment, light of wavelength 600 nm falls on two slits which are spaced at a distance of .5 mm. What is the distance of the slit to the screen
a wooden crate of mass 25 kg is sitting on a horizontal cement floor. then one end of a horizontal pulley is attached
In a period of 1.0s, 5.0e23 nitrogen molecules stike a wall ofarea 8.0cm2. find the pressure exertedon the wall
a fireman 48.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of
A 2.8 kg block slides along a frictionless horizontal with a speed of 5.5 m/s. After sliding a distance of 8m, the block makes a smooth transition to a frictionless ramp inclined at an angle of 43 degrees to the horizontal. The acceleration of gravit..
q1. an electron with a speed of 6.12 times 108 cms in the positive direction of an x axis enters the electric field of
A particle is projected from the surface of Earth with a speed equal to 3.4 times the escape speed. When it is very far from Earth
On a spacecraft, two engines fire for a time of 598 s. One gives the craft an acceleration in the x direction of ax = 4.92 m/s^2, while the other produces an acceleration in the y direction of ay = 7.60 m/s2. At the end of the firing period, the c..
A pulsed laser emits light in a series of short pulses, each having a duration of 23.0 ms. The average power of each pulse is 4.70 mW, Find the number of photons in each pulse
At 25C, the resistance of a segment of gold wire is 61 ohm. When the wire is placed in a liquid bath, the resistance increases to 199ohm ?. What is the temperature of the bath
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