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
Ket [755]
2 years ago
14

SOMEONE PLEASE HELP ME ASAP PLEASE!!!! (The answer is not 0.12 btw)​

Physics
1 answer:
Umnica [9.8K]2 years ago
3 0

Answer:

Number of significant figures=3

Explanation:

15.0/124=0.121

In scientific notation 1.21× 10-1

or,

1.21e-1

You might be interested in
Look at the rock sitting on the hill in the picture above. Gravity should make the rock slide down the hill. What force is actin
nordsb [41]
Look at the rock sitting on the hill in the picture above. Gravity should make the rock slide down the hill. What force is acting to balance gravity,keeping the rock in place? - D. friction
Centripetal force and momentum have to do with movement. Gravity cannot balance gravity. 

5 0
3 years ago
Read 2 more answers
What is the smallest separation between two slits that will produce a second-order minimum for 762 nm red light?
ipn [44]

Answer:

1524 nm.

Explanation:

Angular separation of n th minima is given by the expression

Sin θ = n λ / a

Where λ is wavelength of light used and a is separation between two slits .

a = n λ / sin θ

For a to be minimum, sinθ has to be maximum .

maximum value of sin of any angle is 1 .

so the relation becomes as follows

a = n λ

n = 2 , λ = 762 nm.

a = 2 x 762 nm

= 1524 nm.

3 0
3 years ago
A baseball with a mass of 0.8 kg is given an acceleration of 20m/s.how much force was applied to the ball
Delicious77 [7]
F=mass x acceleration = ma= 0.8*20 = 16N
5 0
3 years ago
A block rests on a frictionless table on Earth. After a 40-N horizontal force is applied to the block, it accelerates at 9.2 m/s
Paul [167]

Answer:

4.6 \frac{m}{s^2}

Explanation:

Since the table is frictionless, there is no force of dynamic  friction between table an block when the horizontal force is applied to it on Earth. Exactly the same is true when the table is taken to the Moon. Therefore, the Net Force acting on the object in both cases when the object accelerates, is the external horizontal force.

Notice that on Earth and on the Moon, the weight of the object (vertical and pointing up) is compensated by the normal force of the table on the object (pointing up and of the same magnitude as the weight) that precludes movement in the vertical direction. So in both cases, its acceleration will only be due to the horizontal force.

We use the equation for Net Force to find the mass of the object:

F=m*a\\40 N =m * 9.2 \frac{m}{s^2}\\\frac{40}{9.2} kg=m\\m=\frac{40}{9.2} kg

We use this mass (since the mass of the object is a constant independent of where the object is) to find the acceleration the object will experience when the 20 N horizontal force is applied on it on the Moon:

f=m*a\\20N=\frac{40}{9.2} kg*a\\20*9.2=40*a\\\frac{20*9.2}{40} =a\\a=\frac{9.2}{2} \frac{m}{s^2} \\ a=4.6 \frac{m}{s^2}

3 0
3 years ago
Which of the following is an example of the electrostatic force acting in an atom?
777dan777 [17]
A proton repelling another proton

Like charges of the protons would repel one another.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Complete the sentences below using the words below, you may use each word more than once
    13·1 answer
  • 1. The experiment shown below is finished. What can you conclude from these results?
    15·1 answer
  • An electron is pushed into an electric field where it acquires a 1-v electrical potential. suppose instead that two electrons ar
    5·2 answers
  • Which particle of the atom is the smallest and has the least mass?
    5·2 answers
  • There are many forms of energy. All energy falls into one of two categories, either potential or kinetic energy. A Newton's Crad
    11·1 answer
  • Which order shows decreasing momentum?
    9·1 answer
  • What is the fate of solar radiation that reaches the earth?
    5·1 answer
  • a microwave operates at a frequency of 2400 MHZ. the height of the oven cavity is 25 cm and the base measures 30 cm by 30 cm. as
    5·1 answer
  • Two very small charged particles exert an electrostatic force F on each other. If the distance between them is doubled, the forc
    7·1 answer
  • A 300 cm rope under a tension of 120 N is set into oscillation. The mass density of the rope is 120 g/cm. What is the frequency
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!