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A pendulum is made by letting a 2.0-kg object swing at the end of a string that has length of 2.0 m. The maximum angle the string makes with the vertical as the pendulum swings is 30°. What is the speed of the object at the lowest point in its swing?
A screen is placed 51.0 cm from a single slit that is illuminated with light of wavelength 677 nm. If the distance between the first and third minima in the diffraction pattern is 2.80 mm, what is the width of slit.
With what minimum speed must you toss a 100 g ball II str aig ht up to just barely hit the I O-m-high ceiling of the gymnasium, With what speed does the ball hit the floor
Consider a region of space with volume 32 mm3. Suppose the energy stored in the electric field of that particular region of space is 87 J. evaluate the average electric field strength in this region
A 3.2 kg block of wood sits on a table. A 3g bullet, fired horizontally at a speed of 490 m/s, goes completely through the block, emerging at a speed of 250m/s. What is the speed of the block immediately after the bullet exits.
A girl is standing at the edge of a cliff 145 m above the ground. She reaches out over the edge of the cliff and throws a rock straight upward with a speed of 6.79 m/s. How long does it take the rock to hit the ground
An isolated capacitor of unknown capacitance has been charged to a potential difference of 119 V. Calculate the unknown capacitance
A roller coaster is towed up an incline at a steady speed of 0.51m/s by a chain parallel to the surface of the incline. The slope is 2.85 % that means that the elevation increases by 2.85 m for every 100m of horizontal distance.
A 1320-kg racecar is driving around a circular track of radius 161 m. What is the magnitude of the net force acting on the vehicle
A tennis ball on Mars, where the acceleration due to gravity is 0.379 of a g and air resistance is negligible, How fast was it moving just after being hit
If the mass of Jupiter is 1.8 x 10^27 kg, then find the escape velocity for an object launched from the surface of Jupiter
A current flow in a circle loop is clockwise. What is the magnetic field at the center of the loop point
The blue line of the hydrogen emission spectrum has a wavelength of 433.9 nm. Calculate the energy of one photon of this light
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