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If a bus you are riding is traveling at a constant speed and then stops abruptly, you feel "thrown” forward. Which of the following is true at the instant the bus begins to stop? Suppose the seat is frictionless and that you are not wearing a seatbelt.
Select one:
1. You slide forward on the frictionless seat at the same velocity that the bus was traveling prior to the stop.
2. A force is throwing you forward.
3. You are accelerating (remember, there is acceleration when velocities are changing).
An individual is nearsighted; his near point is 13.0 cm and his far point is 43.0 cm. What lens power is needed to correct his nearsightedness? When the lenses are in use, what is this person's near point?
A 120 g trick baseball is thrown at 51 km/h. It explodes in flight into two pieces, with a 50 g piece regular straight ahead at 86 km/h. How much energy do the pieces gain in the explosion.
A violinist places her finger thus that the vibrating section of a 1.00 g/m string has a length of 40 centimeter, and then she draws her bow across it. Determine what is the tension in the string
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 3.0 s, it rotates 30 rad. What was the average angular velocity? What was the angular acceleration through this time?
Water is flowing through a pipe (area 3.7 cm2) that connects to a faucet adjusted to have an opening of 0.45 cm2. what is its speed as it leaves the faucet
The antenna for an AM radio station is a 75-m-high tower that is equivalent to one-quarter wavelength, At what frequency does the station transmit
A spring (70 N/M) has an equilibrium length of 1.00 meter. If the mass is not attached to the spring, determine how far up the slope will the mass move before coming to rest
A monatomic ideal gas in a rigid container is heated from 212 K to 305 K by adding 7840 J of heat
A planet moves in an elliptical orbit around the sun. The mass of the sun is Ms. The minimum and maximum distances of the planet from the sun are R1 and R2, in that order.
Two bugs are riding on a meter stick rotating about its 50.0-cm mark. Bug A is riding on the 40.0-cm mark. Bug B is riding on the 75.0-cm mark.
Write three methods of increasing the volume of a balloon
A hospital patient receives a quick 500-cc blood transfusion during a needle with a length of 5.0 cm and an inner diameter of 1.0 mm. If the blood bag is suspended 0.85 m above the height where the blood where the blood first starts to flow into the..
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