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Q. How many kilograms of water at 25 degrees celcius must come to thermal equilibrium with a 3.0kg gold bar at 99 degress celcius in order to lower the bar's temperature to 47 degrees celsius?
Q. A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes once around the track. Find the angle that the total acceleration of the car makes-with the radius connecting the center of the track and the car-at the moment the car completes the circle.
hysicists model a magnetic field by assigning to every point in space a vector that represents the strength and direction of the field at that point. Two magnetic fields that exist in the same region of space may be added as vectors at each point to ..
What is moment of inertia
A person weighs 670N steps onto a spring scale in the bathroom, and the spring compresses by 0.79 cm. What is the spring constant? And what is the weight of another person who compresses the spring by 0.34 cm.
What is electric field in the wire
Dan is gliding on his skateboard at 4. He suddenly jumps backward off the skateboard, kicking skateboard forward at 8.00 (as measured by an observer on the ground). Dan's mass is 60 and skateboard's mass is 5.00 .How fast is Dan going as his fee..
what is the final position of the man. What is the magnitude of the electric field (in N/C) at the point (-2.0 m, 3.0 m).
A football spends a total of 5 seconds in the air. It reaches a peak height of 30 meters. How long does it take to reach its peak height? The football has the range of 90 yards. What is its horizontal velocity.
A 1.0mL syringe has an inner diameter of 6.0mm , a needle inner diameter of 0.29 mm , and a plunger pad diameter (where you place your finger) of 1.2 cm . A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100mmHg...
What's the advantage of launching space vehicles from high flying aircraft in place of from the ground.
A small object with a mass of 360 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are detached by 2.40 cm. If the thread makes an angle of 17.0° with the vertical, what..
imagine that each person is about the same distance from the center of the field and can generate the same level of sound intensity. How many people are at game.
Compute the position, velocity vector and the distance attained by athlete in a long jump event.
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