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Q. A 155 g copper bowl contains 245 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5.00 g being converted to steam. The final temperature of the system is 100°C. Neglect energy transfers with the environment.
Q. A weight of 5.00 * 10^3 is suspended in equilibrium by two cables. Cable 1 applies a horizontal force to the right of the object and has a tension, Ft1, Cable 2 applies a force upward and to the left at an angle of 37 degrees to the negative x-axis and has a tension, Ft2. What is the tension T1?
Three charged particles are placed at each of three corners of an equilateral triangle whose sides are of length 2.8 . Two of the particles have a negative charge: = -6.7 and = -13.4 . The remaining particle has a positive charge, = 8.0 . What is ..
A ranger in a national park is driving at 41km/h when a deer jumps onto the road 66 m ahead of the vehicle. After a reaction time of t s, ranger applies the brakes to produce an acceleration of -3.20m/s2. What is the maximum reaction time allowed ..
What is the turntable rotation angular velocity
The wire is cut at point P. Will the potential difference between points A and B increase, decrease, or remain the same? Give reason for.
A cannonball launched with an initial velocity of 161 m/s at the angle of 45 degrees follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is it going when it hits the balloon? What is the accelera..
Two cars have a head on collision. Both were traveling at 42m/s toward each other. Car A has a mass of 722 KG. Car B has a mass of 848KG. After impact, car A is moving backward at 2 m/s. What is car B's velocity after impact.
You work for a moving company and are given the job of moving two crates (masses are 130kg and 280kg) held together by a rope attached between the two. You pull on a rope attached to the larger crate giving the system the acceleration of 0.29m/s2. Wh..
How far below the release point is the center of mass of two stones at t = 550 ms? (Neither stone has yet reached the ground.)
A massless spring with spring constant 22.10 N/m hangs vertically. A body of mass 0.280 kg is attached to its free end and then released. Assume that the spring was unstretched before body was released. How far below the initial position does the ..
A 238 g particle is released from rest at point A inside a smooth hemispherical bowl of radius 32.5 cm.compute the gravitational potential energy at A relative to B.
What is the magnitude of an average acceleration of the ball
What are the components of the ships displacement
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