Which is a good example of a contact force?

protons in the nucleus of an atom

a ball falling down after it's thrown up into the air

a satellite orbiting Earth

a bat hitting a ball

Denise heats a beaker of dilute acid on a hot plate in a fume hood. What should Denise wear to best protect herself when she transports the beaker to a balance outside the hood?

The actual size of a gold nucleus is approximately 7 fm. Knowing this, calculate the kinetic energy (KE, or KEa, however you may choose to label the measurement) that an alpha particle would need to just touch the outside of the nucleus.

Wnen you set something down on the ground what kind of work are your arms doing

The privilege of using someone else's money for a period of time is called what?

Which sentence about particles in matter is true? A. Atoms are present in solids and liquids but not in gases. B. The particles of matter are in constant motion. C. The same kinds of atoms are found in different elements. D.

How much would a 100kg man weigh on the surface of the sun where the acceleration is 274 m/s

How much current is in a circuit that includes a 9 - volt battery and a bulb with a resistance of 12 ohms?

Find the current Voltage VD and current ID in the following circuit assuming (a) ideal diode. (b) Constant voltage drop model with Von = 0.75V (c) using the exponential model (I_0=1*10^ (-14)). Verify your results through Multisim simulation

Suppose two stars are located in region a of the h-r diagram shown in the figure below. Star X appears much dimmer that Star Y as seen from Earth. Which Star can be inferred to be nearer to Earth, and how do you know?

A student examining a joint observes collagen-rich connective tissue fibers linking the bones, but finds no synovial cavity. Which structural classification fits the observed joint?