How old are irregular galaxies?

A car starts from rest and accelerates uniformly to a speed of 72 km per hour over a distance of 500m. calculate acceleration

What is potential energy called that is associated with objects that can be stretched

Calculate the speed of a satellite moving in a stable circular orbit about the Earth at a height of 4000 km from the surface of the earth (The mass of the earth is 5.97*1024 kg and the radius of the earth is 6.38*106 m).

Faina says that an object cannot be in mechanical equilibrium when only a single force acts on it. do you agree or disagree? explain.

An object placed in water will float if the weight of the object is MORE THAN the buoyant force of the water. True False

Protons are the smallest particle of an element that retains the original Characteristics of the element. True or False

What are all the elements of a perfect graph?

Heat energy always flows from a. larger objects to smaller objects. b. heavier objects to lighter objects. c. cooler objects to warmer objects. d. warmer objects to cooler objects.

Rafael swings a baseball bat with a force of 25 N. The baseball bat exerts a force of 5 N on the baseball. What is the mechanical advantage of the baseball bat?

All of the following are examples of aerobic exercise except Question 9 options: a) sprinting b) marathon running c) biking d) long distance swimming