A spring is 14cm long. Three masses are hung from it and then it is measured again. Now it is 19.5cm long. What force did the three masses provide? The spring constant for the spring is 30N/m.

I am planning to make two dives. The first dive is to 60 feet for 45 minutes, and the second dive is to 60 feet for 35 minutes. How long would I have to stay on the surface (minimum surface interval) to do these two dives safely?

A neutral copper ball is suspended by a string. a positively charged insulating rod is placed near the ball, which is observed to be attracted to the rod. why is this? 1. the ball becomes positively charged by induction. 2.

A hot water heater is operated by using solar power. if the solar collector has an area of 5.3 m2, and the power delivered by sunlight is 995 w/m2, how long will it take to increase the temperature of 1 m3 of water from 20 ◦c to 65 ◦c?

A small, dense center that has a positive charge and is surrounded by moving electrons

A car traveling at 37 m/s starts to decelerate steadily. It comes to a complete stop in 6 seconds. what is its acceleration? m/s

How do evaporation and condensation relate to heat

Resistance = 0.1 ohm Current = 60 amps Voltage = ? 0.6 6 60 600

The velocity of a roller coaster as it moves down a hill is where v0 is the initial velocity and h is the vertical drop in feet. An engineer wants a new coaster to have a velocity of 90 feet per second when it reaches the bottom of the hill.

What are sun spots?

Identify characteristics of objective personality tests. -self-report -scientific -paper-and-pencil -questions about behavior -objective -potentially biased answers Multiple Choice-Psychology