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An ant travels in a perfectly straight line in the –x direction some distance. It turns, and then travels some new displacement, 30.0O above the +x axis, again, in a straight line, for some distance. The final leg of its little ant journey is a displacement of 15 cm, 40.0O below the +x axis, and its back at its starting point. What are the magnitudes of the first two displacements?
Two blocks of masses 2 kg and 3 kg, are linked by a light string that passes over a pulley of moment of inertia 0.004kg·m 2 and radius 5 cm. The coefficient of friction for the table top is 0.30. The blocks are released from rest. Using energy method..
A car travels up a hill at a constant speed of 31 km/h and returns down the hill at a constant speed of 47 km/h. Calculate the average speed for the round trip
Air that initially occupies 0.16 m3 at a gauge pressure of 100 kPa is expanded isothermally to a pressure of 101.3 kPa and then cooled at fix pressure until it reaches its initial volume. Estimate the work done by the air
an electron is accelerated from rest through a potential difference 1200 v. give the electrons kinetic energy after
A cue ball (mass = 0.165 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.61 N·s to the ball. Find the velocity of the second ball just after it is struck
Two rocket ships travel in the same direction with a relative speed of .98c. a light pulse is fired from the back of one of the ships to the front of the same ship of length deltaX=20m.
An underwater scuba diver sees the Sun at an apparent angle of 28.0° from the vertical. What is actual direction of the Sun
An 86lb net force is applied to a 42 Kg object at an angel. Determine the object's acceleration magnitude and direction
Consider a grounded conducting sphere of radius "a" in the presence of a point charge "Q" a distance "D" away from the center of the sphere. How do you show the electric field E is everywhere normal of the sphere, and how do you find the induced char..
The Atwood machine in the figure consists of masses m1 = 1.20 kgand m2 = 1.05 kg and a solid pulley with a diameter of 6.1 cm and amass mp = 0.606- kg. When released from rest, what is the speed of the heavier mass after it has fallen a distance of..
A 15 ohm resistor is connected to the terminal of a 12 V battery, Sketch the circuit and Calculate the current in the circuit
A 600 gram particle (initially at rest at the origin) is subjected to a force of F=15i+20j (N) which pushes the particle along a track with a displacement described by s=3i+4j (m). calculate the average power produced by this force
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