Why is net force a vector sum A. All forces have direction and magnitude B. Forces can only be attractive C. All forces are contact forces D. There are four fundamental forces

Kinetic friction is affected by the weight of the object. True or false?

What is the best definition of muscular strength

An uncharged metal sphere hangs from a nylon thread. When a positively charged glass rod is brought close to the metalsphere, the sphere is drawntoward the rod. But if the sphere touches the rod, it suddenly flies away from the rod.

You are designing a delivery ramp for crates containing exercise equipment. The 1470 N crates will move at 1.8 m/s at the top of a ramp that slopes downward at 22.0°.

A 5 ml sample of water has a mass of 5g what is the density of the water

What does the law of conservation of energy state about energy in a closed system?

James joule carefully measured the difference in temperature of the water at the top and bottom of a waterfall. Why did he expect a difference

To change gross income, someone would need to? save more per month. reduce deductions. earn more money. increase withholdings.

An elevator (mass 4150 kg) is to be designed so that the maximum acceleration is 0.0800g. what is the maximum force the motor should exert on the supporting cable?

Car batteries are often rated in ampere-hours. Does this information designate the amount of (a) current, (b) power, (c) energy, (d) charge, or (e) potential the battery can supply?