Explanation:
Substituting the given values into the formula:
57 J = 0.5 * 0.145 kg * velocity^2
To find the velocity, we can rearrange the equation and solve for velocity:
velocity^2 = (57 J) / (0.5 * 0.145 kg)
velocity^2 = 786.20689655 m^2/s^2
Taking the square root of both sides:
velocity = √(786.20689655 m^2/s^2)
velocity ≈ 28.0 m/s
While the woman’s weight would change due to differences in gravitation force, her mass would remain the same no matter if she was on the Earth or moon.
Explanation:
Given:
Mass of the object (m) = 0.5 kg
Velocity (v) = 8 m/s
Radius (r) = 0.75 m
Substituting the given values into the formula:
F = (0.5 kg) × (8 m/s)^2 / (0.75 m)
F = 0.5 kg × 64 m^2/s^2 / 0.75 m
F = 32 kg·m/s^2 / 0.75 m
F ≈ 42.7 N
The speed of sound in a vacuum is 0 m/s because sound waves cannot travel through a vacuum.
Venus is the slowest-rotating planet and is sometimes referred to as Earth’s “sister” because of their similar size and distance from the sun.
Subatomic particles- which include neutrons, protons, and electrons- are much smaller than atoms.
Explanation:
Newton's First Law of Motion states that the body at rest will remain at rest, and the body in motion will remain in motion with a constant velocity, unless acted on by an unbalanced force; F=ka.
Explanation:
The Big Bang Theory attempts to explain the origins of the universe. According to the theory, a “big bang” produced matter and antimatter in equal quantities.
Explanation:
Acceleration is the rate of change in velocity over a period of time.
The Theory of Relativity is one of physics’ most famous and was proposed by Albert Einstein.
Explanation:
Light is a curiosity in that it acts as both a wave and a particle. It only changes direction via reflection (bouncing off of something) or refraction (passing from one medium to another). In a vacuum, the speed of light is constant, but when passing through a medium that has an index of refraction different from a vacuum, light’s speed slows.
Explanation:
Force is defined as a push or a pull on an object.
A negatively charged particle has more electrons (which have negative charge) than protons (which have a postive charge).
Explanation:
In Project Motion it is possible for an object to display two types of motion simultaneously.
A ball on a hill would have potential (or stored) energy because of its location on the top of a hill and because of its mass. Recall that gravitational potential energy is the product of an object’s mass, position, and the acceleration due to gravity.
Eggs are typically more dense than water, which makes them sink. However, if enough salt is added to the water, the water becomes more dense than the egg, which will cause it to float.
