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1. What is a scalar quantity? Cite some examples of scalars.
2. What is a vector quantity? Give some examples of vectors.
3. What do we mean when we say that two vectors are equal?
4. Is vector addition "closed"?
a positive charge 60 nc is 15 cm from a negative charge 50 nc. the force on one of these charges due to the other is
A simple pendulum is made from a L long string and a small ball, mass=m, attached to its free end, Write the lenght of the curve s(t) and specify the time period for small oscillations
A cube 22 centimeters on each side contains 2.2 grams of helium at 20° Celsius. 1300 Joules of heat energy are transferred to this gas. What is the final pressure
how long does it take the engine to lift the crate a vertical distance of 19.8 m? Friction in the system is negligible.
A car starts a race from rest on a circular track and has a tangential speed of 43 m/s at the end of the third lap. The track has a radius of 91 m. what is the magnitude of its tangential acceleration
the uniform beam below is 4.0meters long and has mass 30.0kg. Find the tension in the rope and the force exerted by the building on the beam by the building
A worker drags a 150lb. crate across the floor by pulling on a rope inclined at 17degrees above the horizontal. What tension in the rope is required to start the block moving
find the amplitude of the pressure wave generated
You make a capacitor by cutting the 14.5 cm--diameter bottoms out of two aluminum pie plates, separating them by 3.30mm , What's the capacitance of your capacitor
A 82 kg diver steps off a 13 m tower and drops from rest straight down intothe water. If he comes to rest 4.5 mbeneath the surface, determine the average resistance force exertedon him by the water.
What vertical height does block reach above its starting point. What speed does it have when it slides back down to its starting point.
In a double-slit experiment you saw in class the distance among slits is 5.0 mm and the slits are 1.0 m from the screen. Two interference patterns can be seen on the screen, one due to light by wavelength 480 nm and the other due to light with wavele..
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