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
Eva8 [605]
2 years ago
13

A box slides to the right along a horizontal surface which is true about the friction force

Physics
1 answer:
mixer [17]2 years ago
7 0

Answer:

It is a force in the direction of the motion that allows the box to move

Explanation:

You might be interested in
Introduced species often thrive and multiply in an environment very different from their original one. Why are they often able t
Anestetic [448]
They begin to adapt into their new location. They then end up having adaptations to help them survive.
8 0
3 years ago
What two variables is acceleration dependent on?
Vaselesa [24]
The correct answer to this qustion is velocity and time
7 0
3 years ago
A radioactive material has a count rate of 400 per minute. It has a half life of 40 years. How long will it take to decay to a r
cestrela7 [59]

Answer:

160 years.

Explanation:

From the question given above, the following data were obtained:

Initial count rate (Cᵢ) = 400 count/min

Half-life (t½) = 40 years

Final count rate (Cբ) = 25 count/min

Time (t) =?

Next, we shall determine the number of half-lives that has elapse. This can be obtained as follow:

Initial count rate (Cᵢ) = 400 count/min

Final count rate (Cբ) = 25 count/min

Number of half-lives (n) =?

Cբ = 1/2ⁿ × Cᵢ

25 = 1/2ⁿ × 400

Cross multiply

25 × 2ⁿ = 400

Divide both side by 25

2ⁿ = 400/25

2ⁿ = 16

Express 16 in index form with 2 as the base

2ⁿ = 2⁴

n = 4

Thus, 4 half-lives has elapsed.

Finally, we shall determine the time taken for the radioactive material to decay to the rate of 25 counts per minute. This can be obtained as follow:

Half-life (t½) = 40 years

Number of half-lives (n) = 4

Time (t) =?

n = t / t½

4 = t / 40

Cross multiply

t = 4 × 40

t = 160 years.

Thus, it will take 160 years for the radioactive material to decay to the rate of 25 counts per minute.

7 0
2 years ago
A friend is telling you about a type of high-energy, short-wavelength electromagnetic wave. She is MOST LIKELY to be talking abo
Masteriza [31]

Answer: A. X-rays

Explanation:

X-rays have the shortest wavelength and the highest energy of all of the options given.

4 0
3 years ago
A right triangle ABC has sides /AB/ =9cm, /BC/=12cm find /AC/ and angles ACB and ABC if angle BAC= 90°​
dezoksy [38]

fdi9bn 08989089089008i uuuuuuri9ij

8 0
3 years ago
Other questions:
  • For a spring oscillating in simple harmonic motion, at what point will the velocity of
    9·1 answer
  • A sample of Bismuth-212 has a mass of 2.64 grams (g) after 121 seconds (s). What was the initial mass of the sample if Bismuth-2
    11·1 answer
  • If you cook a marshmallow a few feet above a camp fire, it will cook mostly
    12·1 answer
  • Would hurt if u have a baby?
    12·2 answers
  • Olivia put a glass of water in the freezer. She left it there for three hours. When she returned, the water had turned to ice. W
    14·1 answer
  • The audio power of the human voice is concentrated at about 300 Hz. Antennas of the appropriate size for this frequency are impr
    12·1 answer
  • Which statement best describes energy and matter in a closed system?
    9·1 answer
  • A 3kg plastic tank that has a volume of 0.2m ^3 Is filled with liquid water . Assuming the density of water is 1000kg/m^3 determ
    14·1 answer
  • Answer the following below.
    14·1 answer
  • what seems to happen to the one electron in the outer layer of sodium when it combines with chlorine to form sodium chloride?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!