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A piece of aluminum is suspended from a string and then completely immersed in a container of water. The mass of the aluminum is 1 kilogram and its density is 2.7 X 103 kg/m3 . Calculate the tension in the string before and after the aluminum is immersed in water.
Calculate the total force exerted on the outside of a circular submarine window of diameter 30-cm at a depth of 1200 meters.
in young's two-slit experiment using light of wavelength 6.0×10^-7m, the slits were 0.40mm apart and the distance of the slits to the screen was 1.20m find the separation of the fringes. what is the angle in radians subtended by a central pair of bright fringes at the slit?
You are on the second story of a building, using a rope to lower a box to your friend on the ground.
The box is moving downward at a constant velocity. Consider your system to be the box+rope. Is
the work done by you on the system positive, negative, or zero?
A. Draw and label an extended free-body diagram for the beam. For full credit, you must do the
following:
• Draw each force at the location where it is exerted.
• Label each force with the TYPE of force, the object that it is exerted ON, and the object that it
is exerted BY
B. How much upward force does support 1 exert on the beam? Explain your reasoning and show
your work.
A car lift in a service station is used to lift a car of mass 2200 kilograms. If the radius of the output piston is 8 centimeters and the radius of the input piston is 3 centimeters, find the force needed to be supplied to the input piston in order to lift the car
Ceres is considered to be the largest asteroid in the asteroid belt between the orbit of mars and jupiter . Ceres diameter is approximately 945 km, and it's mass 8.96 x 10²⁰ kg. Find the acceleration due to gravity and the asteroid's escape speed
Interstellar space far from any star is filled with atomic hydrogen at a density of 1atom/cm at a very low temperature of 273k find
(a) the pressure of the interstellar gas
(b) the root mean speed of the atoms
(c) the edge length of a cube that will contain atoms with a total energy of one joule
A satellite is orbiting the Earth at a distance of 35 kilometers. The satellite has a mass of 500 kilograms. If the Earth has a mass of 5.97x1024 kilograms and a radius of 6.36x106 meters, what is the gravitational force between the Earth and the satellite?
Neurons are components of the nervous system of the body that transmit
signals as electrical impulses travel along their length. These impulses propagate
when charge suddenly rushes into and then out of a part of the neuron called axaon.
Measurements have shown that, during the inflow part of this cycle, approximately
3.6x10" Na+ (sodium ions) per meter, each with charge +e, enters the axon. How
many coulombs of charge enters a 1.59 cm length of the axon during this process
