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Questions in physics

[Answered] How is a euglena like a plant cell? How is it like an animal cell? Like a plant cell: Like an animal cell:

[Answered] Mr. Knote, a piano tuner, taps his 440 Hz tuning fork with a mallet. What is the period of the vibrating fork?

[Answered] If Earth were twice as far from the Sun, the force of gravity attracting the Earth to the Sun would be a. twice as strong b. half as strong c. one-quarter as strong Can someone explain this one for me?

[Answered] Which would best reduce the amount of energy needed to pull a wagon up a ramp? 1. Increasing the slope of the ramp 2. Reducing the friction between the wagon wheels 3. Reducing the length of the wagon handle 4. Increasing the friction between the wagon wheels

[Answered] A dart is thrown horizontally with an initial speed of 10 m/s toward point P, the bull's-eye on a dartboard. It hits at point Q on the rim, vertically below P, 0.19 s later. (a) What is the vertical distance between points P and Q? (b) How far away from the dartboard is the dart released?

[Answered] P waves move through the crust at a speed of about 6.5 km/s. How far will the P wave move in 5 seconds?

[Answered] A radio station has a frequency of 90.9 megahertz ([tex]9.09 \times 10^7[/tex] Hz). What is the wavelength of the radio waves the station emits from its radio tower?

[Answered] In order to determine speed, you must know: A. time B. distance C. Both (A) and (B) D. None of the above

[Answered] What object circles around a planet?

[Answered] A 2 kg mass is held 4 m above the ground. What is the approximate potential energy due to gravity of the mass with respect to the ground?