PHYSICS MIDDLE SCHOOL

A book has a mass of 50 grams and an acceleration of 5 m/s/s. What is the force on the book?

Answers

Answer 1
Answer:

Answer:

250 newtons i belive.

Explanation:
Answer 2
Answer:

Answer:220

Explanation:has more mass

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What is a physical form in which a substance can exist?
What information does the atomic mass of an element provide? A. the sum of electrons and protons in an atom B. the difference between the number of protons and electrons C. the number of protons and neutrons in an atom D. the number of isotopes
30 Points 4 correct answer!!! ^u^This chart lists information from the periodic table about several elements.Which answer correctly fills in the blanks?A. Lithium has an atomic number of 3; boron has 5 electrons; oxygen has 8 neutrons; neon has an atomic mass of 20.B. Lithium has an atomic number of 4; boron has 6 electrons; oxygen has 8 neutrons; neon has an atomic mass of 20.C. Lithium has an atomic number of 7; boron has 11 electrons; oxygen has 16 neutrons; neon has an atomic mass of 10. D. Lithium has an atomic number of 73; boron has 5 electrons; oxygen has 8 neutrons; neon has an atomic mass of 30.

What would change if the wave had higher frequency

Answers

If the frequency of a wave increases and it stays in the same medium, then its wavelength decreases.

What ismechanical
energy?
A energy of moving electrons
B vibrations of particles of matter
C energy that moves things
D vibrations that move tiny bones in the ear

Help me 30 points

Answers

Answer:

Energy that moves things. Think of your arm grabbing a glass of water. That's a form of mechanical energy because you just moved something.

In physical sciences, mechanical energy is the sum of potential energy and kinetic energy. It is the macroscopic energy associated with a system. The principle of conservation of mechanical energy states that in an isolated system that is only subject to conservative forces, the mechanical energy is constant.

The streams and small rivers that feed into a main river are called

Answers

Tributary is what u call a small river that flows into a larger river

Answer:

Tributaries

Explanation:

Examine the circuit. Pretend you are an electron flowing through this circuit and you are with a group of other electrons. Suddenly you come to the ‘fork in the road’ and you and some of the other electrons are temporarily separated. A short while later you are back together with the other electrons. This type of circuit is called a(n) ____________ circuit.PLEASE HELP!!!

Answers


You knew that this question is ridiculously easy.  So, just to
make it harder, you decided not to let us see the picture, so
that we could not "examine the circuit".

The description is talking about a parallel circuit.  The other
kind is a series circuit, and that one has no forks in the road.

Answer:

parallel

Explanation:

In an electric circuit a ‘fork in the road’ appears in a parallel configuration. This kind of circuit is characterized by the different currents each 'road' take after the bifurcation, depending on the different resistance each one has. The voltage remains the same for every 'road'.

The park has added two more cars to the already existing roller coaster. If the park wants to maintain the speed of the roller coaster with the addition of the cars, what must it do? A) Increase the height a point A. B) Increase the heights at point A and B. C) Reduce the number of hills and dips in the course. D) Increase the friction between the wheels and the track.

Answers

D because friction will slow it down going up hills (for safety reasons) and you go really fast going down.

Answer:

Decrease the friction between the wheels and the track.

Explanation:

Decrease the friction between the wheels and the track. Friction opposes motion. If the amount of friction is decreased, the speed of the cars should increase.

This answer is for the question on usa testprep

Which of the following will result in the highest conductance ? A. Large cross-sectional area, short pipe
B. Large cross-sectional area, long pipe
C. Small cross-sectional area, short pipe
D. Small cross-sectional area, long pipe

Answers

Answer:small cross-section area,long pipe

Explanation:

Conductance is a measure of how easily the current can flow through a electrical component.

It is the inverse of resistance.

Conductance is given by (cl)/(a)

where c is conductivity(constant for a component),l is the length of component parallel to the flow and a is the area of cross-section of the component perpendicular to the flow.

So,conductivity increases with increase in l and decreases with increase in a.

So,small cross-sectional area and long pipe has high conductance.
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