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One force of 30 N acting East and a second second force of 30 West on an object of a mass m = 20 Kg. What is the magnitude and direction of the acceleration a of the object?
A race car goes through a flat, circular 90 degree turn at a constant speed of 221 miles/hr. The acceleration of the car is observed to be 3 times bigger than the acceleration of an object in freefall (3g). Determine the radius of the turn.
A hollow cubical box is 0.30 m on an edge. What is the depth of the water in the box just at the instant that water from the lake begins to pour into the box from the lake
The frequency is tripled, so that the reactances of the inductor and capacitor are no longer equal. What are the new reactances of the inductor
One tonne of good-quality oil shale will produce 30 gal of oil. What is the energy content of this shale relative to 1 t of bituminous coal
Steam at a constant absolute pressure of 20atm is admitted to the cylinder of an engine. The length of thepiston stroke is 60 cm and its diameter is 20 cm. How much work injoules does the steam perform during one full stroke of the piston?
A single string of length 3.22 meter is made up of two separate shorter strings, C and D, spliced together. Evaluate what is the length of string C
A simple pendulum has a length L and a mass m. At its highest point, the pendulum mass is 0.25L above its lowest point. What is the speed of mass when it is at its lowest point
Determine the magnitude of the average net force
A 5 kg ball is thrown upward with an initial speed of 30 meters per second. Suppose there is a constant air resistance of 25N opposing the motion during its entire up and down path
a 38 g bullet strikes a 0.65 kg block attached to a fixed horizontal spring whose spring constant is 6.2 x 103 nm and
A fishing line is attached to a bober that has diameter of 5.00 cm and mass of 5.00g. A lead weight is attached to line. What is mass of lead
two particles of mass m1 1.5 kg and m2 2.2 kg are traveling with velocities v1 4.5 ms and v2 2.9 ms as shown in the
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