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Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 12.8 cm-3, and their speed is 522 km/s.
(a) Find the current density of these protons.
(b) If Earth's magnetic field did not deflect the protons, what total current in amperes Earth receive?
Four charges are arranged in a rectangle with a length of 21 cm, and width of 15 cm. The charge on the top left corner is 4nC, the charge on top right corner is -3nC, the bottom right corner has a charge of 6nC, and the bottom left corner has a ch..
strikes the wooden block of a ballistic pendulum, as shown. The block has a mass of 270 g. Find out the speed of the bullet/block combination immediately after the collision.
How many 111 W lightbulbs can you use in a 107 V circuit without tripping a 16 A circuit breaker? (The bulbs are connected in parallel, that means that the potential difference across each lightbulb is 107 V.)
A vulture circles around its prey and moves in a horizontal circle of radius 45 m with a speed of 15 m/s. at what angle should the vulture be banked so that it does not tend to slip sideways
A man stands in the middle of a boat, which is 4.1 m long and has a mass of 75 kg. The end of the boat that is closest to land is 2.7 m from the shore. What is the mass of the man
There are three masses arranged on the vertexes of an equilateral triangle with side L. what is the speed of each mass at infinity
A potter is shaping a bowl on a potter's wheel rotating at constant angular speed. The friction force between her hands and the clay is 1.5 N total. How large is her torque on the wheel
A 1.5 kg bicycle wheel with a radius of 0.27 m turns at a constant angular speed of 28 rad/s when a(n) 0.33 kg reflector is at a distance of 0.14 m from the axle. What is the angular speed of the wheel
Imagine two 5.0 g bags of protons, one at the earth's north pole and the other at the south pole. Calculate the gravitational attraction that each bag exerts on the other
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, Determine the maximum speed and the earliest time
Venus has a mass of 4.87 1024 kg and a radius of 6.05 106 m. Assume it is a uniform solid sphere. What is the rotational kinetic energy of Venus on its axis
The pressure inside a gas bottle at 25.5 °C is 3630 kPa. What will be the pressure inside the bottle
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