Sharpening a pencil leaves behind pencil shavings. is sharpening a pencil a physical change or a chemical change

A change in displacement with respect to a change in time

Why cooking pans don't have have metal handles?

What is the mass of a cylinder of lead that is 1.80 in in diameter, and 4.12 in long. the density of lead is 11.4 g/ml?

Match each characteristic with the type of wave it corresponds to. Longitudinal waves Transverse waves The direction the wave travels is parallel to the displacement of the medium. Electromagnetic waves are an example of this type of wave.

Which of the following pairs of joints represents the same type of joint? A.) Neck and knee B.) Knee and elbow C.) elbow and shoulder D.) Knee and shoulder

A provides resistance in an electric circuit. a. wire b. light bulb c. switch. d. battry

Why is it good for scientist to be skeptical

Which of the following describes a scientific law? A. based of scientific evidence B. explains how and why nature does what it does C. not based of scientific evidence

Before leaving her home, Myesha makes sure that every electrical appliance is unplugged and checks that every window and door is securely locked. She checks everything seventeen times according to a strict ritual that she has worked out.

a minibus drives 238 miles with a constant speed of 84 mph and another 80 miles with a constant speed of 60 mph. how much time in total does it take to travel these distance?