PLEASE HELP !What is the acceleration of a ball that starts at rest and increases in speed
to 20 m/s in 45 seconds? *

Answers

Answer 1

Answer: 20/45 = 0.4? I’m not sure but I think this is it

Answer 2

Answer: 20/45 which will be 0.4:))

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An ant sits on the back of a mouse. The mouse carries the ant across the floor for a distance of 10 meters. Was there work done by the mouse? Explain.

Answers

yes because the mouse was moving with kts kwn force.

Answer: no

Explanation:

force and distance are not in the same direction

Longitudinal waves compress the medium they travel though. One example of a longitudinal wave is a

Answers

Answer: Waves in compressed string

Explanation:

Longitudinal waves are waves in which the vibration of the medium is going parallel to the direction of the waves produced by the medium.

Longitudinal wave can occur in compressed string. A compressed string displaced horizontally will transmit wave in the same horizontal direction. That's why they are longitudinal waves.

Answer:

It is sound waves

(I did USAtestprep)

Explanation:

Amendments to the Constitution can be proposed bythe president and vice president.Congress and state legislatures.the president and the Supreme Court.Congress and the Supreme Court.

Answers

Amendments to the Constitution can be proposed by the Congress and state legislatures. As written in Article V of the Constitution, the authority to amend the constitution lies with a two thirds majority vote in the House of Representatives and Senate or by a constitutional convention called by two thirds of the state legislatures.

What is the advantage of a gold leaf electroscope ?

Answers

It's to determine if there is a charge on an object/body or not and what kind of charge as well. Hope this can help!

Which part of a scientific argument must be supported by valid data? claim evidence reasoning theory

Answers

This question is a bit ambiguous because all parts of a scientific argument must be supported by valid data. However, among the choices, the closest synonym to "valid data" would be evidence. Evidence is the body of facts or information that support a given idea.

Answer: Theory

Explanation: A claim is an interpretation based on the results of a given experiment, you first observe, and interpret the information.

Evidence is the valid data itself.

The reasoning is the approach or the "logic path" you used to reach some theory or claim.

The theory is an interpretation of the natural world, that explains why and or how some things work.

If we want to support a theory, we need to have some valid data that supports, at least, part of it, so the right answer here is theory.

Notice that claim also needs to be supported for valid data, but in the case of the claim you first get the data and then make the claim, and in the theory, the work is done in the other order.

6 . A transformer draws 24 W of power from a 220 V power line, stepping the voltage down to 7.5 V. What is the equivalent resistance of the input circuit?7.A circular loop of wire is in a spatially uniform magnetic field as shown. The magnetic field is directed into the screen and is perpendicular to the loop. What is the direction of the induced current in the loop, or is no current induced?

Answers

Answer:

6. 2017 Ω, about 2000 Ω.

7. no current is induced unless the field is changing

Explanation:

6. The relationship between power, voltage, and resistance is ...

P = V²/R

Rearranging gives

R = V²/P = (220 volt)²/(24 watts) ≈ 2016.667 Ω

The closest answer choice is 2000 Ω.

___

7.No current is induced in a stationary loop in a time-invariant magnetic field.

If something were changing, the direction of current induced would depend on whether the field is increasing or decreasing, and/or whether the loop is expanding or contracting.

Final answer:

The equivalent resistance of the input circuit is approximately 2028.33 ohms.

Explanation:

In this question, we are given the power input and the voltage input of a transformer, and we are asked to find the equivalent resistance of the input circuit. To find the equivalent resistance, we can use the formula:

Resistance = Voltage2 / Power

Using the given values of voltage (220 V) and power (24 W), we can substitute these values into the formula to find the equivalent resistance:

Resistance = (2202) / 24 = 2028.33 ohms

Therefore, the equivalent resistance of the input circuit is approximately 2028.33 ohms.

Learn more about Electricity and Magnetic Fields here:

brainly.com/question/33523755

#SPJ3

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