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What is the final tempearture when a 3.0 kg gold bar at 99 degrees C is dropped into 0.22 kg of water at 25 degrees C?
A block with mass m = 19.0 kg slides down an inclined plane of slope angle 17.8 ° with a constant velocity. It is afterwards projected up the same plane with an initial speed 1.35 m/s. How far up the incline would the block move before coming to rest..
Jupiter's moon Io has active volcanoes (in fact, it is the most volcanically active body in the solar system) that eject material as high as 500km (or even higher) above the surface. How high would this material go on earth
Calculate the acceleration of a skier heading down a 10.0 deg, slope, assuming the coefficient of friction for waxed wood on wet snow
A 27.0-kg child on a 1.00-m-long swing is released from rest when the ropes of the swing make an angle of 27.0° with the vertical. find the child's speed at the lowest position
Three electrons are located at the vertices of an equilateral triangle, one at each vertex. What is the magnitude of the initial acceleration of each electron
The Moon has one fourth of the diameter of the Earth with just 1.25 % of its mass. Calculate the gravitational acceleration on the surface of the Moon
Assume the sound speed in air is 343 m/s. A jet aircragt's engines emit an 850 Hz roar. What frequency do you hear if the aircraft approaches you at 540mph
A projectile is fired vertically from Earth's surface with an initial speed of 8.9 km/s. Neglecting atmospheric friction, how far above the surface of Earth will it go
A spherical shell is formed by taking a solid sphere of radius 25.0cm and hollowing out a spherical section from the shell's interior. What is the ratio of the outer area to the inner area of the shell
In the Bohr model of the hydrogen atom, what is the de Broglie wavelength for the electron when it is in the n = 2 level
A 130 g ball with speed 7.5 m/s strikes a wall perpendicularly and rebounds in the opposite direction with the same speed. find the magnitudes of the average force on the wall
A uniform electric field of magnitude 590 N/C exists between two parallel plates that are 3.60 cm apart. Determine the distance from the positive plate
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