Tommy was walking at a rate of 4 miles/hour at noon and at 12:30 pm he was walking at a brisk rate of 6 miles/hour. Two hours later Tommy was walking at a leisurely rate of 2 miles/hour. Which statement about Tommy's accleration is true?

What is the most important benefit of all scientists using the scientific method?

A student wants you to demonstrate that an electric current will produce a magnetic field. Which set of objects could be used to demostrate this? A) A battery, a coil of wire and a compass. Eliminate B) A compass, some paper clips and a battery.

You can hear sounds around the corner of a door due to the wave property called diffraction. Group of answer choices True False

Two resistors, R1=2.79 Ω and R2=6.37 Ω, are connected in series to a battery with an EMF of 24.0 V and negligible internal resistance. Find the current I1 through R1 and the potential difference V2 across R2.

If 600 j of work is done in 3 s, what is the power? (power: p = w/t) 0.005 w200 w603 w1800 w

What are the steps that produce electricity from this fuel

Adrian read about a new antimicrobial in a popular magazine. The advertisement claimed that the product Bactokil prevents bacterial growth. So, Adrian conducted a controlled experiment to test the product claims.

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. what is the average acceleration of this sprinter, and how long does it take her to reach that speed?

How are primary and secondary succession similar and how are they different?

What relates the net force exerted on an object to its mass and acceleration?