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
9966 [12]
4 years ago
9

Which event is an example of a contact force?

Physics
1 answer:
Scorpion4ik [409]4 years ago
4 0

Answer:

D. a person pulling a sled.

Explanation:

contact force only occurs when something directly comes in contact with another object.

a. is wrong because that is called magnetic force.

b. gravitational force

c. is an electrical force

You might be interested in
_______ are nonmetals that react with metals to form salts.
kari74 [83]

i’m pretty sure it’s , the alkali metals


5 0
3 years ago
Energy from the Sun arrives at the top of the Earth’s atmosphere with an intensity of 1.30kW/m21.30⁢kW/m2. How long does it take
vivado [14]

Answer:

T=1.384×10⁶seconds

Explanation:

Given data

p (Intensity)=1.30 kw/m²

E (Energy)=1.8×10⁹ J

A (Area)=1.00 m²

T (Time required)=?

Solution

E=PT   ................eq(i)

where E is energy

P is radiation power

T is time

Radiating Power is given as

P=pA

Where p is intensity

A is Area

Put P=pA in eq(i) we get

E=pAT

T=E/pA

T=\frac{(1.8*10^{9}}{(1.30*10^{3} )*(1.00)}  )\\T=1.38*10^{6} seconds

3 0
3 years ago
A horizontal line above the time axis of a speed vs. time graph means an object is ___.
miv72 [106K]
A horizontal line on a speed/time graph means a constant speed.
6 0
4 years ago
What is the speed of an 800 kg automobile if it has a kinetic energy of 9.00 x 10^J?
MA_775_DIABLO [31]

Ek = 1/2 mv^2

9 × 10^4 = 1/2 × 800 × v^2

9 × 10^4/400 = 400 v^2 / 400

9 × 10^4/400 = v^2

√225 = v

15 ms⁻¹ = v

That's the only way I know how to work it out

I think in this case velocity and speed would be considered the same because me

s = d/t and v=d/t

one is distance travelled and the other is displacement of a body

7 0
2 years ago
The Red Sea is widening at a rate of 1.25 centimeters per year. How many years will it take to widen another 812.5 centimeters?
Pani-rosa [81]
E 812 Jak’s now fmfdkc
5 0
3 years ago
Other questions:
  • What is the term for an area of a country located away from capital?
    12·1 answer
  • Calculate the magnitude of the normal force on a 25.2 kg block in the following circumstances. (Enter your answers in N.) HINT (
    11·1 answer
  • What is the initial velocity and final velocity<br> h
    7·1 answer
  • 6.A truck drives to a rock quarry at a speed of 20 m/s. The truck takes on a load of
    15·1 answer
  • A plane startling from rest accelerates at 3 m/s Square. Calculate the increase in velocity after 25 sec
    10·1 answer
  • What 3 factors should be considered when designing a lighting rod?
    10·1 answer
  • Help meeee help plsssss
    8·1 answer
  • Q010) A well in which the water rises on its own to a level above its aquifer Group of answer choices is the result of pressure
    8·1 answer
  • Explain the process of radioactive decay what happens during radioactive decay what is the result at the end of radioactive deca
    7·1 answer
  • If you want to delay a pulse of light in a laser experiment, you can send the light through a long coil of fiber optic cable. Li
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!