Which of the following forces can change velocity?

Acceleration forces

Equal and opposite horizontal forces

Equal and opposite vertical forces

Unequal, opposite forces

27. According to Kepler's third law, (a) Mercury travels fastest in the part of its orbit in which it is closest to the Sun. (b) Jupiter orbits the Sun at a faster speed than Saturn. (c) all the planets have nearly circular orbits.

A solenoid 3.0 cm long consists of 5748 loops of wire. If the magnetic field inside the solenoid is 1.0T. what is the magnitude of the current that flows through it? A) 52 A B) 0.24 A C) 4.2 A D) 3.0 A

A forklift does 450 J of work to lift a 150 N hot tub. How high is the hot tub lifted? Round your answer to the nearest whole number.

A block of material of volume 20cm³ and density of 2.5gcm³suspended from a spring balance with half of the volume of the block immersed in water. What is the reading of the spring balance?

When a body is moving with a uniform velocity, the acceleration is ___?

A resistor has a current of 2 amperes when connected to a single battery. If a second identical battery is connected in series with the first, what is the current through the resistor? a) Still 2 amps b) 4 amps c) 1 amp d) no current

Describe some basic guidelines for safe PRE

Why is the liver important in digestion

A building 190 feet tall casts a 30 foot long shadow. if a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the person's eyes to the top of the building (to the nearest hundredth of a degree) ?

The frequency of which type of electromagnetic wave is just higher than that of visible light? A. infrared waves B. gamma rays C. x-rays D. radio waves E. ultraviolet rays