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As two boats approach the marina, the velocity of boat1 relative to boat 2 is 2.36 m/s in a direction 40.8° east ofnorth. If boat 1 has a velocity that is 0.728 m/s due north, what is the magnitude of the velocity of boat 2?
What is the direction of the velocity of boat2? Give the angle counterclockwise relative to the north?
An object weighs 277 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 221 N. When it is immersed in oil, it weighs 257 N.
In one design, the large spring with spring constant 2.0×10^4 was placed behind the cannon. The other end of the spring braced against a post that was firmly anchored to the ship's frame.
Each tire of an automobile has an area of 0.026m^2 in contact with the ground. The weight of the automobile is 2.6x10^4 N. What is the pressure in the tires.
A skier of mass 72 kg is pulledup a slope by a motor-driven cable. What power must a motor have to perform this task
A -23.8 nC charge is located at the origin. What is the magnitude of electric field at the position (-13 cm, -13 cm)
question1a house painter stands 3.0 m above the ground on a 5.0-m-long ladder that leans against a wall at a point4.7 m
Boral is a commercial shielding material consisting of approximately equal parts by weight of boron carbide (B4C) and aluminum compressed to about 95% theoretical density (2.608 g/cm3) and clad with thin sheets of aluminum 0.25 cm thick. The manuf..
A 0.2 object is swung in a vertical circular path on a string 0.1 m long. The acceleration of gravity is 9.8 m/s^2. If a constant speed of 4.07 m/s is maintained, what is hte tension in string when the object is at the top of the circle? Answer in..
Consider a beam as shown in the figure that is 2 m long and supported by a rope. It is pressed against the wall. what is the tension in the rope
A microphone is located on the line connecting two speakers that are 0.766 m apart and oscillating 180° out of phase. What is the next lowest frequency that produces an interference maximum at the microphone's location
At t=0 a ball is thrown upward from the ground. Two seconds later, the ball hits the ground. Assume g=10m/s2. What is the maximum height of the ball. What is the initial velocity of the ball?
A grinding wheel in the shape of a solid disk is 0.300m in diameter and has a mass of 2.50kg . The wheel is rotating at 2100rpm about an axis through its center. A) What is its kinetic energy? B) How far would it have to drop in free fall to acquire ..
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