1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
34kurt
3 years ago
7

PLLLLLLLLLLLZ HELP

Physics
1 answer:
Katyanochek1 [597]3 years ago
6 0

The second choice is the correct one.

You can spot it just from the units. An equation can't be true unless it has the same units on both sides.

Wavelength has units of (meters).

Frequency has units of (per second).

When you multiply them, you get (meters per second), the unit of speed, and the 'c' on the other side is speed.

None of the other choices has units of speed on the right side.

You might be interested in
You kick a soccer ball with a mass of 2 kg. The ball leaves your foot with a speed of 30 m/s. How much kinetic energy does the b
Lyrx [107]

Answer:

KE= 900 (I think)

Explanation:

KE=½mv²

KE= ½(2)(30)²

KE=½(60)²

KE=30²

KE=900

Hope this helps!

7 0
2 years ago
Read 2 more answers
In which example would the most transfer of energy take place from Mechanical energy to Thermal (heat) energy?
drek231 [11]

Answer:The answer is when a metal plate is pressed against a fast spinning piece of steel hard enough to stop it. i know this because I just took a test and got this question and got it write

Explanation:

5 0
2 years ago
Which process is a physical change?
zlopas [31]
Water boiling, no cheamical bonds have been altered.
7 0
3 years ago
abody starts from rest and accelerate uniformly at 8m/s/s.calculate the distance travelled by the body in 10s? ​
vagabundo [1.1K]

Explanation:

using the formula: S=ut+½gt², where u=0, S=?, g=8m/s², t=10seconds.

S=ut+½gt² ("ut" term will cancel because u=0).

=> S= ½gt²

=>S = ½×8×10²

=>S = 4×100

=>S = 400m .

Therefore, the distance traveled by the body in 10s is 400m.

hope this helps you.

6 0
2 years ago
In the equation for centripetal force, which expression represents the centripetal acceleration of the object? mv2 StartFraction
Sphinxa [80]

Answer: \frac{V^{2}}{r}

Explanation:

According to Newton's 2nd Law of motion the force F is proportional to the mass Fm and acceleration a:

F=m.a (1)

On the other hand, the equation for the Centripetal force is:

F=\frac{mV^{2}}{r} (2)

Where:

V is the velocity

r is the radius of the circular motion

Making (1) and (2) equal:

m.a=\frac{mV^{2}}{r} (3)

Hence:

a=\frac{V^{2}}{r} This is the expression for the centripetal acceleration

It should be noted, this acceleration is directed toward the center of the circumference of the circular motion (that's why it's called centripetal acceleration).

3 0
3 years ago
Read 2 more answers
Other questions:
  • If an apprentice makes 55% of Journeyman wages, what would an apprentice make per hour if the Journeyman scale is $17.64?
    5·1 answer
  • If you hit another object with your vehicle, your _______ will be slowed or stopped by the force of impact caused by that object
    8·2 answers
  • A note has a wavelength of 0.77955 m. If the speed of sound is 343.00 m/s, what pitch is this note?
    13·1 answer
  • A 50 kg pitcher throws a baseball with a mass of 0.15 kg. If the ball is thrown with a positive velocity of 35 m/s and there is
    7·1 answer
  • A car starts from rest at a stop sign. It accelerates at 4.0 m/s2 for 3 seconds, coasts for 2 s, and then slows down at a rate o
    14·1 answer
  • Describe how we can use scientific knowledge and reasoning to help guide us when making decisions
    12·1 answer
  • You need to get to class, which is 282 meters away. You can only walk in the hallway at about 2.0 m/s (if you go any faster, you
    15·1 answer
  • A brick moves across a rough surface at constant velocity. Which of the following are forces that should be included in a free b
    6·1 answer
  • PLZ HELP!!I WILL MAKE YOUR ANSWER BRAINLIEST!!!!!
    13·1 answer
  • How do you change yoru name on brainly
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!