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A ball of mass m=1.5kg is placed on the platform supported by a spring with k=250 n/m. initial velocity of the ball is 0. find how far down will move the platform. do the same if ball is thrown on the platform with velocity 10 m/s directed downwards.
A satellite weighing 500 kg is in a circular orbit around the earth. It takes exactly 3 hour to go around the earth, What is the force of gravity on this satellite
Earthquakes generate sound waves inside Earth. Unlike a gas, Earth can experience both transverse (S) and longitudinal (P) sound waves. how far away did the earthquake occur
The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0? above the horizontal, What was the takeoff speed for such a leap
an astronaut is rotated in a horizontal centrifuge at a radius of 5.0 m.a what is the astronauts speed if the
A 24kg projectile is moving at 240m/s in the positive direction of the x axis when it explodes and divides into two fragments, What is the direction and speed of the other piece
A distant galaxy emits light that has a wavelength of 499.8 nm. On earth, the wavelength of this light is measured to be 503.8 nm. Find the speed of the galaxy relative to the earth
It is possible to use electromagnetic radiation to ionize atoms. To do so, the atoms must absorb the radiation, What is the longest radiation wavelegth
A 50 Ω resistor is connected in series with a 15 μFcapacitor and a 60 Hz, 120 V source. What value inductor must be inserted in the circuit inorder to reduce the current to one-half that found in a
When there is an input connected across a 12V DC source what is the voltage of the output voltage after the power is connected for a while
The magnitudes of the four displacement vectors shown in the drawing are A = 15.0 m, B = 10.0 m, C =14.0 m, and D = 25.0 m. Determine the (a)magnitude and (b) direction for the resultant that occurs when these vectors are added together.
A skateboarder, starting from rest, rolls down a 13.9-m ramp. When she arrives at the bottom of the ramp her speed is 8.68 m/s. Decide the magnitude of her acceleration, assumed to be constant. If the ramp is inclined at 26.8 ° with respect to the gr..
The pressure fluctuation of sound waves at the closed end of a pipe vibrating at resonance is: 1. Minimum 2. 1/2 minimum 3. unchanged 4. maximum 5. 1/2 maximum
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