Who invented the spiral model of communication?

What is the average speed of an object that travels at a constant speed of 50 m/s?

How do you calculate the speed of a wave? Write and label the formula.

What is the independent variable and dependent variable of Justin wants to determine the effect of fertilizer on the growth of grass?

Is it true that atmospheric oxygen gas is a pure substance?

How do the significant figures in a measurement affect the significant figures in a calculation?

A light wave travels through air in equals 1.00 at an angle of 35 degrees what angle does it have when it passes from the air into the glass n equals 1.50

I have four questions. : Consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. It falls to the ground.

A 0.2 kg plastic cart and a 20 kg lead cart can both roll without friction on a horizontal surface. equal forces are used to push both carts forward for a distance of 1 m, starting from rest.

Infer the effect of deforestation on the carrying capacity of the Amazon rainforest.

What best describes the angle between a changing electric field and the electromagnetic wave produced by it? always equal to a right angle always less than a right angle varies from parallel to perpendicular varies from perpendicular to parallel