he primary coil in a transformer has 250 turns; the secondary coil has 500. Which is correct?
a. This is a step-down transformer.

b. The voltage in the secondary coil will be higher than in the primary.

c. The power in the secondary coil is greater.

d. The power in the primary coil is greater.

Answer:

b

Explanation:

hope its help po #carry onlearning

A couple wants to build a holiday cottage, the cottage is not connected to an electricity grid, but the cottage is next to a small river. The river is always flowing and never dries up, the weather is often windy.
Which one should they get to receive energy.
a wind turbine
solar cells

Give three examples of properties of elements

What are elements made up of?

atoms

matter

Hydrogen

substance

Sometimes the object does not burn up completely and a part of it survives the fall to the planet’s surface. These rocky bodies, are called (blank)

True or False
If two unbalanced forces act on an object in opposite directions, the object will move in the direction that the stronger force is acting.

On a hot day, Dave is relaxing by the pool. He touches the concrete next to the pool and then touches the surface of the water. Which one do you think felt hotter to Dave? Explain your answer.

Can someone help me


Which of the following would a good frame of reference?

A) the moon

B) a tree

C) a rabbit

D) your sister while she rides her bike

Please help! It has to deal with Newton's 3rd law! 30 points! and if right brainliest!

Which of the following statements are examples of positive peer pressure?


Select all that apply.

A
Your teammate tells you not to talk to your friends who did not make the team.

B
Your classmate encourages you to eat a whole pizza and drink a whole 2-liter bottle of soda.

C
Your teammate cheers you on as you head for the goal.

D
Your siblings tell you that they like your new sneakers.

A TV set shoots out a beam of electrons. The beam current is 10A. How many electrons strike the TV screen in a minute.

bonjour HELPPPP :) LOL

Plsss help me find the average kenetic enrgy for these two problems PLSSS ILL GIVE BRAINLIEST!!!

26 points. Pls, hurry. When you lift a book from the ground to your desk, what kind of work do you do, negative or positive? By lifting the book, what do you change? Does the book gain or lose energy? What kind of energy?

Second question: A ball with a mass of 5.0g is moving at a speed of 2.0 m/s. Would doubling the mass or doubling the speed have a greater effect on the kinetic energy of the ball? Explain.

As crust forms at the mid-ocean ridge, it gets pushed away from the ridge as newer crust forms. What is true about crust that forms at the mid-ocean ridge?



A: crust further away from the mid-ocean ridge is younger and crust closer is older


B: crust further away from the mid-ocean ridge is older and crust closer is newer


C: crust is not created at the mid-ocean ridge


D: crust further away from the mid-ocean ridge and crust closer are the same age

Which item produces the magnetic field in the electromagnet?

divided by the resistance is known as _____.
a. Einstein's equation
b. Faraday's law
c. Newton's law
d. Ohm's lawaces that are not moving past each other.

A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J

Will the velocity of the book change as it moves across the surface with NO friction? Explain your answer.

(dont HAVE to explain answer)

please help Scientists have explored only a small portion of space. What evidence is there that gravity exists outside of what they have explored?

How can density be used to describe Earth’s Layers?

Please help me asap and u get brainliest if correct!!!!

What would happen to the digestion process if enzymes were not present

When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure

note: apparently the answer is friction but it doesn't make sense to me so please explain.

Compare and contrast a series circuit with a parallel circuit. Be sure to
discuss how the wires are connected, how the electrons flow from the
battery how the bulbs work, and what a switch does.

If a normal driver inputs about 50 N of force to turn a car, the output force is 3,750 Newtons! What is the MA of the steering wheel?

PLEASE HELP ASAP
Describe the structure of the inner core? The inner core is made of no solid rocks. The inner core is made of liquid metal. The inner core contains melted rocks. The inner core is made of solid iron and nickel.

please can someone solve these questions with working out​

PLS HELP NOW!! I WILL GIVE LOTS OF COINS! In general, explain the amount of force that is applied to both objects during ANY
collision, no matter how big or small, the weight/mass, or velocity of the objects.

The change from a gas to a liquid is called _____.


sublimation

evaporation

condensation

melting

Erin is keeping a science journal. She wrote the following paragraph that explains how light travels through different mediums. But she’s made one mistake. Which sentence in Erin’s journal is incorrect?
A ray of light passes through the air and enters the water inside a metal container. The light ray bends as it crosses the boundary between air and water. Once it hits the bottom of the container, the ray gets reflected. The reflected ray passes back through the water and enters the air without bending. In this example, the ray of light is both reflected and refracted.