In what sense are telescopes like time machines?

If you weigh 665 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 23.0 km? Take the mass of the sun to be ms = 1.99*1030 kg, the gravitational constant to be G = 6.

The frequency of the longitudinal standing wave shown in the drawing is 440 hz. the tube is open at both ends. what is the fundamental frequency of the tube?

What most likely caused geologists to accept Alfred Wegener's theory? A. After 50 years, the theory became popular. B. All hypotheses become theories after a long period of time. C. It took scientists a long time to understand Wegener's ideas. D.

Would life be different if the electron were positively charged and the proton were negatively charged? A) Yes. B) No. Does the choice of signs have any bearing on physical and chemical interactions? A) Yes. B) No.

How do you find the weight of an object underwater

Luke investigated the heating of water

In the nucleus of all atoms are sub-atomic particles called protons and neutrons. all protons have a positive charge.

In a polar covalent bond

Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters. How long will it take her to run down the hallway?

Which of the following is evidence that groundwater causes erosion and deposition?