Sound waves in air travel at approximately 330m/s. Calculate the frequency of a 2.5m-long sound wave.

Based on how stars are named, which star is probably brightest

When moving a negative charge closer to a positive charge source, which of the following happens

One end of a string 5.02 m long is moved up and down with simple harmonic motion at a frequency of 61 Hz. The waves reach the other end of the string in 0.5 s. Find the wavelength of the waves on the string. Answer in units of cm

The average speed of a car being driven in London is 11 miles per hour. If you have to drive 15 miles from your home to work in London how long do you expect it to take

2. Which of the following is an example of a passive immunization? A. Antibodies against rabies given to someone who was bitten by a potentially rabid dog B. Heat-killed flu antigen grown in chicken eggs C.

If I get a spare in one frame and then roll a 1 and 5 in the next frame, what would my score for the spare be? A 10 B 11 C 16 D17

2x^2:3=dg solve for x

A 2.25-kg block is released from rest on a ramp of height h. when the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 15.

Which of the following are steps for balancing chemical equations? Check all that apply. ] A. Multiply the reactants to get the products. B. Change subscripts. O C.

1. Why does the water vapour in clouds condense? 2. Explain why you can see clouds but not see the water vapour in the air