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Physics

Adyson Mahoney

What evidence can you cite for the particle nature of light? 1. Refraction phenomenon of light 2. The many colors of light 3. Diffraction phenomenon of light

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Physics

Bud

As the moon revolves around the Earth, it also rotates on its axis. Why is it that the the same side of the moon is always visible from Earth?

a. The moon does not have a day and night cycle.

b. That side of the moon only faces away from Earth during the daytime.

c. The speed of the moon's rotation keeps the same side always facing Earth.

d. The Earth's gravity attracts one side of the moon more than the other.

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Physics

Willow Kirby

Why are microwaves beneficial to use for transmitting information

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Physics

Blevins

A 75 kg runner taking part in a 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 32 meters. if he completes the 200 m dash in 20.33 s and runs at constant speed throughout the race, what is the magnitude of his centripetal force as he runs the curved portion of the track?

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Physics

Kaeden Holmes

Thinking about the winter we missed out on this year. Calvin and his tiger go sledding down a snowy hill. There is friction between the snow and the sled, and there is air resistance. Looking at the entire time that they spend on the hill (from when they start from rest at the top of the hill until they reach the bottom moving fast), indicate whether each of the following quantities is positive, negative, or zero, by writing either, -, or 0 for the questions below. We take Calvin, the tiger, and the sled as our system.

a. The work done by the normal force that the snow exerts on the system?

b. The work is done by the frictional force that the snow exerts on the system?

c. The change in the kinetic energy of the system?

d. The change in the gravitational potential energy of the system?

e. The total work is done on the system?

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Physics

Kamila Vargas

what are the three types of solenoids, which one is the most common, and which one is used in pinball machines?

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Physics

Brodie Krause

A sound wave has a frequency of 741 hz in air a wavelength of 0.47m what is the temperature of the air as soon as the below city of sound at 0°C is 235 m/s

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Physics

Nathan Jordan

What changes depending on location in the universe, mass or weight. Explain

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Physics

Landin Hardin

What change in pressure occurs in a party balloon that is squeezed to one-half its volume with no change in temperature?

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Physics

Jayleen Gregory

Which of the following describes effort force?

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Physics

Mark Oneal

What does the chemical formula CaCl2 show about the compound it represents?

It is made up of one element.

It is made up of two elements.

It is made up of three elements.

It is made up of four elements.

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Physics

Shyla

An electron with kinetic energy of 2000 eV (1 eV = 1.602 x 10-19 J) is fired horizontally across a horizontally oriented conducting plate with a surface charge density + 4.00 x 106 C/m2. Taking the positive direction to be upward (away from the plate), what is the vertical deflection of the electron after it has travelled a horizontal distance of 4.00 cm?

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Physics

First Mate

A vertebra is subjected to a shearing force of 535 N. Find the shear deformation, taking the vertebra to be a cylinder 3.00 cm high and 4.00 cm in diameter. The shear modulus for vertebrae is 8.00 * 1010 N/m2.

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Physics

Braxton

If radio waves cannot be reflected from the Sun, how can radar be used to find the distance from Earth to the Sun?

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Physics

Priscilla Knapp

When an atom loses an electron, it becomes a

a. positive ion.

b. negative ion.

c. neutral ion.

d. neutral atom.

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