Y = - 2x + 5 and 2x + y = - 7

If the gravitational pull on the moon on earth were the same over all parts of earth, would there be any tides?

What is the basic difference between ultraviolet, visible, and infrared radiation?

Raising 100 grams of water from 40 to 60 °C (the specific heat capacity of water is 1 cal g ) requires the addition of A) 120 calories. B) 1500 calories. C) 2000 calories. D) 2400 calories.

A boy lifts a 30N dragon 2 meters above the ground. How much work did the boy do in the dragon? What is the work?

Recall that the previous hint stated that the magic number is 15*x, where x is a number between 1 and 10. Specifically x is an even number between 1 and 10. Try to guess the value of x.

Like the polar bear, the walrus is a strong swimmer, although it does not have the same endurance. For short periods of time, a walrus can swim at an average speed of 9.7 m/s. How far would a walrus swim at this speed in 3.4 minutes?

How did Einstein's and Newton's theories differ in terms of explaining the cause of gravity?

A sled being dragged to the right across loosely packed snow with a rightward acceleration

Imagine two artificial satellites orbiting earth at the same distance. one satellite has a greater mass then the other one which of the following would be true about there motion? 1.

What is energy? (Not the answer from google search.)