Does hot water or cold water boil faster is that repeated observations using models are controlled experiments

A meter stick flies by with an apparent length of 60 cm. What is it's velocity in m/s? Not sure which formula to use

What observations tell you that a car is accelerating

A spring scale hung from the ceiling stretches by 6.1 cm when a 2.0 kg mass is hung from it. The 2.0 kg mass is removed and replaced with a 2.5 kg mass. Part A What is the stretch of the spring? A spring scale hung from the ceiling stretches by 6.

A 105-kg basketball player crouches down 0.400 m while waiting to jump. After exerting a force on the floor through this 0.400 m, his feet leave the floor and his center of gravity rises 0.950 m above its normal standing erect position.

What can you use to determine whether the SATA port no which you are connecting the drive will also run at 6.0Gbps?

A sound wave traveling at STP has a period of. 0023 seconds. The wavelength of this sound is closest to 1) 1.4E5 2) 6.9E-6 3) 0.76m 4) 76m

Static charge develops on a substance as it acquires or loses protons due to friction. a. True b. False

A milk truck carries milk with density 64.6 lb/ft3 in a horizontal cylindrical tank with diameter 12 ft. (a) Find the force exerted by the milk on one end of the tank when the tank is full. (Round your answer to the nearest integer.) lb

Which human activity contributes to air pollution

Cooler stars age much faster than hotter stars true or false