Which evidence best supports the theory that the universe began with a massive explosion?

A - cosmic background radiation in space

B - parallelism of planetary space

C - radioactive dating of Earth's bedrock

D - life cycle of stars

A student is preparing to bake a cake at home and places several ingredients on the countertop to use. First he preheats the oven to 175C, then mixes all of the ingredients together. He pours all of the cake batter into 2 pans and bakes for 1 hour.

Assume that a 15-kg ball moving at 8 m/s strikes a wall perpendicularly and rebounds elastically at the same speed. What is the amount of impulse given to the wall?

Which of the following is the most likely global climate change? a. a decrease in the overall temperature of the Earth b. an increase in the overall temperature of the Earth c. an increase in the number of cold climates d.

A 5.5 kg box is pushed across the lunch table. The net force applied to the box is 9.7N. What is the acceleration of the box?

Một chiếc thuyền có tốc độ 15 km / h trong nước tĩnh lặng đi 30 km về phía hạ lưu và trở lại trong tổng cộng 4 giờ 30 phút. Tốc độ dòng chảy (theo km / h) là:

One reason it's often easy to miss and action reaction pair is because of?

Recently, some information about a distant planet was learned. It has a radius of 6000000 meters, and the density of the atmosphere as a function of the height h (in meters) above the surface of the planet is given by δ (h) =

Which of the following is not a good approximation of the relationship between independent and dependent variables? A. independent: first, dependent: next B. independent: input, dependent: output C. independent: cause, dependent: effect D.

A force is applied to a 13.0 kg wagon to pull it down the sidewalk at a constant speed. The coefficient of kinetic friction is 0.65. Considering the resulting frictional force, what is the magnitude of the applied force?

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planers in orbit around the Sun.