Physics, 05.11.2020 06:00, HoodieHeem
8.) If a car moving at 50km/h skids 15m with locked brakes, how far does the same car moving at 100km/h
skid with locked brakes?
a. 15m
b. 30m
d. 120m
c. 60m
9.) A lever is used to lift a heavy load. When a 50N force pushes one end of the lever down 1.2m, the load
rises 0.12m. What is the approximate mass (not weight) of the load?
a. 50kg
c. 100kg
d. 500kg
b. 5kg
10.) A block and tackle is used to lift a tractor that weights 210,000N a distance of 10m above the ground. The
maximum force you are able to supply is about 700N. Assuming that you must use every bit of your maximum
force in lifting the tractor (i. e. the tractor begins to rise when you pull with 700N), what length of rope will you
have to pull?
Answers: 2
Physics, 22.06.2019 04:30, phyllides4930
The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:
Answers: 1
Physics, 22.06.2019 09:00, atsuedem974
Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic
Answers: 2
8.) If a car moving at 50km/h skids 15m with locked brakes, how far does the same car moving at 100k...
Mathematics, 28.08.2019 04:30
History, 28.08.2019 04:30
History, 28.08.2019 04:30
Chemistry, 28.08.2019 04:30