Physics Middle School

100 POINTS!!! Match the items on the left with the correct definition on the right.

Answers

Answer 1

Answer:

7. speed of light

Explanation:

the speed of light moves at 186,000 miles per second

Answer 2

Pitch- the loudness of the sound. Hopefully this is right

Related Questions

Use the equation for power to solve the following problems.

1. While rowing across the lake during a race, John does 3,960 J of work on the oars in 60.0s. What is his power output in watts?

2. Anna walks up the stairs on her way to class. She weighs 565N, and the stairs go up 3.25 m vertically.

a. If Anna climbs the stairs in 12.6 S, what is her power output?

b. What is her power output if she climbs the stairs in 10.5 s?

Answers

The equation for power is P = W/t, where P is power in watts, W is work in joules, and t is time in seconds. Plugging in the values given in the problem, we get:

P = W/t = 3,960 J / 60.0 s = 66.0 W

Therefore, John's power output is 66.0 watts.

The equation for power is P = W/t, where P is power in watts, W is work in joules, and t is time in seconds. To solve for power, we need to find the work done and the time it takes to do that work.

a. The work Anna does when climbing the stairs is equal to the force she exerts (her weight) times the distance she travels vertically. Using the equation W = Fd, where W is work, F is force, and d is distance, we get:

W = Fd = (565 N)(3.25 m) = 1836.25 J

The time it takes Anna to climb the stairs is given as 12.6 s. Plugging in the values, we get:

P = W/t = 1836.25 J / 12.6 s = 145.48 W

Therefore, Anna's power output when climbing the stairs in 12.6 s is 145.48 watts.

b. If Anna climbs the stairs in 10.5 s, the time is different but the work done is the same, so we can use the same value for W:

W = 1836.25 J

Plugging in the new time, we get:

P = W/t = 1836.25 J / 10.5 s = 174.88 W

Therefore, Anna's power output when climbing the stairs in 10.5 s is 174.88 watts.

1) W=Pt
3,960=P x 60
3960/60=P
P=66
66W

2a) W=Fs
W=565x3.25
W=1836.25J
W=Pt
1836.25=P x 12.6
1836.25/12.6=P
Power output= 145.73W

2b)
1836.25/10.5=174.88W

Match the term to its description.
Elliptical galaxy, Galaxy, Lens galaxy, Spiral galaxy
A) Is a collection of several billion stars and interstellar matter isolated in space
B) Has a large flattened core
C) Has a central core from which curved arms spiral outward
D) Forms a perfect sphere or an ellipse and is flattened to some degree
HELP ASAP WILL MARK BRAINLIEST!!!!!!!!!!!!!!

Answers

Elliptical galaxy
a type of galaxy that forms a perfect sphere or an ellipse and is flattened to some degree

Lens galaxy
a type of galaxy with a large flattened core

Spiral galaxy
a type of galaxy that has a central core from which curved arms spiral outward

Irregular galaxy
a type of galaxy that does not have a distinct regular shape

Ejejejkei hahalallalaallaaoksjwje don’t mind me I needa ask a question asap

The diagram below shows the phase of the moon as observed every seven days for a month.
Which moon phase would have been observed on Day 7?

A. First Quarter Moon
B. Waxing Gibbous
C. Third Quarter Moon
D. Waning Gibbous

Answers

The answer is c

GOKU SOLOS

The answer would bc C

100 PTS AND BRAINLIEST!!! GIVE DECENT ANSWERS!! Match the items on the left with the correct definition on the right. (also i have this asked already but it was an incorrect answer so if you want brainliest, go answer that one)

Answers

1. Top Of a Speed Wave -> Crest
2. 1,100 feet per second -> Speed of Light
3. The frequency of sound -> Pitch
4. The Bottom of a light wave -> Trough
5. The cause of sound -> Vibrations
6. The Loudness of a sound -> Amplitude
7. 186,000 miles per second -> Speed of Light

8. Particles of light energy -> Photons
9. Energy of light -> Radiant

Hello! Hope this makes it clear (Sorry if responded a bit too late!)

Answer:

1: Crest

2: Speed of sound (not SO sure about this one)

3: pitch

4: Trough

5: Vibrations

6: Amplitude

7: Speed of light (not SO sure about this one)

8: Microwaves

9: Photon

10: Radiant

PLEASE GIVE BRAINLIST (if it helps)

ASAP please
A student is playing with marbles. He rolls a purple marble, which strikes a green marble that is at rest. After the collision, the green marble rolls away from the student. The purple marble rolls back toward him.

Why does the purple marble roll back toward the student? Explain your response in terms of Newton’s third law.

Answers

Answer:YOUR MOM LOL

Explanation: THIS IS THE ANSWER... NO FATHER LOL

Newton's third law states that every action has an equal and opposite reaction.

In the context of the scenario with the marbles, when the purple marble strikes the green marble, the green marble exerts an equal and opposite force toward the purple marble, which is why it rolls back toward him.

Transfer of momentum takes place from the green marble back to the purple marble. This can be explained in terms of Newton's third law, because the forces between two marbles are equal and opposite in direction.

For further information refer to

https://brainly.com/question/23772134

72 pts!!! Indicate on the wave graph the location of the following:

Answers

Answer:

A: crest

C: trough

B: wavelength

please give brainlist if it helps!!

Answer:

A: Wavelength

B: Trough

Crest

Explanation:

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