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Physics

Guest

What kind of tide is responsible for extreme tides

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Physics

Ciara Moran

What does the speed of sound depend on?

A. Medium that the sound travels through

B. Acoustics

C. Frequency of the sound

D. Loudness of the sound

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Physics

Makhi Lynch

Which of these is not a source of the shock waves that lead to protostars?

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Physics

Marisa Rush

Which kind of information is known about a person if that person's DNA is in a database? A. how old the person is

B. where the person was probably born

C. some diseases the person might have

D. whether the person is likely to commit a crime

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Physics

Gaige

A science teacher ran a marathon. After the race she showed her students the silver blanket she was given to keep her warm. A group of students investigated how the colour of the blanket affected how much infrared radiation is absorbed

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Physics

Jacoby Garza

Students asked to measure the temperature of a reaction beaker recorded the following temperatures. 103.7°C, 108.4°C, 105.8°C, 104.6°C The actual temperature is 105.1°C. Which measurement is the most precise

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Physics

Kolten Franklin

Two atoms that are isotopes of one another must have a different number of what?

electrons

neutrons

protons

all particles

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Physics

Muffin

How can you use the newton's second law to find force?

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Physics

Jermaine

Define and describe a mixture using examples.

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Physics

Catherine Lang

Which have a positive charge? neutrons atoms protons electrons

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Physics

Gavyn Robles

Now that we know the velocity of the cart before the collision is 1.80m/s, let's use this to determine the linear momentum and kinetic energy of the disk-cart system before the collision. The mass of the cart is 23.5kg. The mass of the disk is 11.4kg. Using this mass information and the velocity calculated, determine the horizontal component of momentum of the disk-cart system during this interval.

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Physics

Lyric Wallace

A circuit is built based on the circuit diagram shown.

A diagram of a closed circuit with a power source on the left labeled 60 V. There are 3 resistors in parallel, separate paths, connected to it labeled 40 Ohms, 50 Ohms and 30 Ohms.

What is the current in the 50 Ω resistor?

1.2 A

1.5 A

2.0 A

4.6 A

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Physics

Isabelle Murphy

After harvesting their main crops, such as corn and wheat, many farmers plant a second crop called a cover crop. This cover crop grows during the fall and winter and is then plowed over in the spring. What is the main purpose of a cover crop?

A.

to get rid of excess seed rather than storing during the winter

B.

to provide food and shelter for birds and animals during the winter

C.

to prevent water runoff into other parts of the farmers' field

D.

to prevent erosion of the topsoil by wind and water

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Physics

Cunningham

A light wave is traveling straight up out of the ocean then moves out into the air how do you expect the movement of the light wave to change the light wave will

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Physics

Brian Lam

To verify that this expression for (vf) α has the correct units of velocity, you need to perform some unit analysis. begin by finding the equivalent of a volt in terms of basic si units. what is a volt in terms of meters (m), seconds (s), kilograms (kg), and coulombs (c) ?

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