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Q 1 Two identical clocks are synchronized. One is then put in orbitdirected eastward around the Earth while the other remains on the Earth. Which clock runs slower? When the moving clock returns tothe Earth, are the two still synchronized?
Q 2 Photons of light have zero mass. How is it possible that they have momentum?Q 3 If you hold water in a paper cup over a flame, you can bring thewater to a boil without burning the cup. How is this possible?
735 g of salt is placed into 400 mL of water and stirred thoroughly. How much salt dissolves into the water
A block of mass 2.1 kg, which has an initial velocity of 5.3m/s at time t = 0, slides on a horizontal surface. Determine the distance that the block slides as it comes to rest
It takes only 9.12N of force to hold up a 1KG metal crown in water, Compute the specific gravity of this metal, and guess what element it might be using a density table
The astronaut pushes on the satellite, giving it a speed of 0.25 directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with shuttle.
A 1.4kg grindstone in the shape of a uniform cylinder of radius 0.2m acquires a rotational rate of 1800 rev/s from rest over a 6.0 s interval at constant angular acceleration
What is the partial pressure of oxygen in humidified air (RH= 100%) at body temp, if the barometric pressure is 750 torr
Bacteria vary somewhat in size, but a diameter of 2.00?m is not unusual, What would be the volume (in cubic centimeters)
Two 8.00mm x 8.00mm electrodes with a 0.10-mm-thick sheet of Mylar between them are attached to a 8.0V battery. Without disconnecting the battery, the Mylar is withdrawn. (Very small spacers keep the electrode separation unchanged.) Dielectric consta..
Another particle, of mass 7.4 10-27 kg, moves along the positive x-axis with a speed of 4.0 106 m/s. (Assume that mass is conserved.) Evaluate the third particle's speed. What is the direction of motion?
The magnetic coils of a tokamak fusion reactor are in the shape of a toroid having an inner radius of 0.7 m and an outer radius of 1.3m. Find the magnitude of the magnetic field inside the toroid
what is the potential difference between the plates.Take the zero of the gravitational potential energy to be at the position of the child as the ropes are horizontal.
Calculate the energy needed to accelerate a spaceship of mass10,000 kg to a speed of .3c for intergalactic spaceexplortation. Compare this with a projected annual energy usage onEarth of 1021.
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