When a positive electrical charge comes in contact with a neutral electrical charge what happens?

A. They attract each other

B. The positive charge becomes negative

C. The positive charge is cancelled out

D. Nothing

For a planet orbiting the sun, r p is the distance from the sun to the perihelion and r a is the distance from the sun to the aphelion. What is a planet's orbital eccentricity if r p is equal to 0.45r a? A. 1.45 B. 0.55 C. 0.38 D. 2.

A grey wolf is chasing a deer through a forest. The deer's muscle cells eventually begin to run out of oxygen. Which form of cellular respiration takes over, so the deer may continue to run for a while longer?

Light passes through a single slit of width 8.32x10^-5 m. The first (m=1) diffraction minimum occurs at an angle of 0.347. What is the wavelength of the light in nanometers? (Hint: The answer will be between 400 and 700 nm.)

Which statement is correct? A. Light, in a vacuum, travels at the same speed even if the light source is moving. B. Light, given off from a moving source will travel faster in a vacuum. C.

Why magnetic substance doesnot show magnetic property?

What is the force required to accelerate a baseball with a mass of 0.145 kilograms and an acceleration of 35.00 meters/second squared?

A 4.00 kg stone is dropped from a height of 145 m. What is the stone's potential and kinetic energy respectively when it is 50.0 m from the ground?

If the speed of a vehicle was reduced from 65 miles per hour to 35 miles per hour, by approximately how many kilometers per hour was the speed reduced? (1 kilometer = 0.62 mile, rounded to the nearest 0.01 mile)

What is the acceleration rate of an object if the amount of force applied on the object is 75 Newtons and the object has a mass of 15 kilogram?

Two children pulling the rope with the same force in opposite direction is that an unbalanced force or a balanced force