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Questions in physics

[Done] I am trying to find the magnitude of a resultant vector. Do I take into consideration the negatives when I find the x and y components of the two vectors?

[Done] When you weigh yourself, are you actually reading the support force acting on you, or are you really reading your weight?

[Done] How many miles can you get on one tank of gas if your tank holds 18 gallons and you get 23 miles per gallon?

[Done] What's the difference between acceleration and velocity?

[Done] plrase help a little stuck here

[Done] What sort of problem do you use acceleration due to gravity? What sort of problem do you not use acceleration due to gravity?

[Done] A region in which there is a high probability of finding an electron is called an electron cloud.

[Done] A force of 75 N is applied to the side of a crate resting on a level floor. The crate has a mass of 25 kg. If the coefficient of static friction is 0.15, is the 75 N force enough to make the crate accelerate? Explain why or why not.

[Done] If the slope of a position versus time graph is downward, what kind of motion is produced?

[Done] _____ occurs when light changes direction after colliding with particles of matter.