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A box with mass M=70kg is tired to a rubber rope and dropped off a bridge which is at height H=100m above the ground. The rope has non-stretch length l=10m and cross-section area A=60cm^2. If the lowest height that box reaches is h=10m (before it is pulled back up by the elastic rope). Find the young modulus of the rubber y=?Gravitational acceleration is g=10m/s^2
To get back to the shuttle, the astronaut unstraps a 10-kg tool kit and throws it away with a speed of 8 m/s. In the script, the astronaut, who has a mass of 80 kg without the toolkit, survives, but is this accurate.
In a U-tube there is some water and on top of the water in one of the tubes there is oil (water and oil don't mix). Find the density of the oil
A square loop of Cu wire 4.00cm on an edge is lying on a horizontal table. An electromagnet above the square loop is turned on to produce a magnetic field. what is the power loos in the loop
At a given point above the surface of Earth, the gravitational acceleration is equal to 7.8 m/s2. At what speed could a satellite be in orbit at this point
Using a 689-nm wavelength laser, you form the diffraction pattern of a 0.113-mm wide slit on a screen. You measure on the screen that the 14th dark fringe is 8.77 cm away from the center of the central maximum. How far is the screen located from t..
Small rockets are used to make small adjustments in the speed of satellites. One such rocket has a thrust of 53 N. If it is fired to change the velocity of a(n) 66000 kg space craft by 99 cm/s, how long should it be fired? Answer in units of s.
An electric field (E = 150i + 200j (N/m)) is applied in a region where a proton is moved from an initial position (x, y) = (-2.0, +3.0) meters into a final position (x, y) = (+5.0, +2.0) meters. find what would be the new value of the potential dif..
An electron is accelerated horizontally from rest in a television tube by a potential difference of 25,000 V. At what angle will the electron be traveling after it passes between the plates
What is the kinetic energy
Ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens. In a standard treatment, 2.0 kg of beef receives 4.5 kGy of radiation in 48 s. (A) How much energy is deposited in the beef in kJ? (B) What is the a..
Oppositely charged parallel plates are separated by 4.52 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates?
A horizontal vinyl record of mass 0.10 kg and radius 0.10m rotates freely about vertical axis through its center with and angular speed of 4.7 rad/s. What is the angular speed of the record immediately after the putty sticks to it
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