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A 10-kg box is stationary on the ground and pushed by a downward force of 30 N. Calculate the supporting normal force acted on the box from the ground.
A cannonball is shot (from ground level) with an initial horizontal velocity of 40 m/s and an initial vertical velocity of 29 m/s, What is the initial speed of the cannonball
Consider the following equations of motion. v = v0 + at ?x = v0t + (1/2) at^2 v2 = v02 + 2a?x (a) Can the equations above be used in a situation where the acceleration varies with time? (b) Can they be used when the acceleration is zero?
A horizontal force of 822 N is needed to drag a crate across a horizontal floor with the constant speed. You drag the crate using a rope held at an angle of 34° (from the horizontal).
A resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners.
A ray of light incident upon a mirror makes an angle of 42 with the mirror. What is an angle between the incident ray and the reflected ray.
Explain the construction of a electromagnetic velocity sensor and explain its working. In a bike speedometer the wheel diameter is 80cm what is the frequency of velocity sensor, which gives 1 pulse per rotation of wheel at a speed of 80Km/H?
Suppose a hanging 1 kg lab mass is attached to a 4.0 kg block on the table. If the coefficient of kinectic friction, mu is 0.20, what is the acceleration of the block.
A person weighing 700N on a wire. find the tension force in the two segments of the wire. left wire 20 degrees and right wire 40 degrees.
A 180g block hangs from a spring with spring constant 6.0 N/m. At the block is 31cm below the equilibrium point and moving upward with a speed of 98.0cm/s. What is the block's position at t = 9s.
This can lead to adverse decisions on product costing and pricing. To address this issue, some authors have suggested using the Activity Based Costing method." Do you agree with the above statement? Discuss and give relevant examples to support you..
A skier with a mass of 66kg starts from rest and skis down an icy (frictionless) slope that has th elength of 57 m at an angle of 32° with respect to the horizontal. At the bottom of the slope, path levels out and becomes horizontal, the snow beco..
Runner A is initially 8.0 mi west of a flagpole and is running with a constant velocity of 6.0 mi/h due east. Runner B is initially 6.0 mi east of the flagpole and is running with a constant velocity of 8.0 mi/h due west. How far are the runners f..
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