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
jeka94
3 years ago
8

6. A car accelerates from rest to 5m/s in 20 s. The force from the engine is 2000N. The force of air resistance and friction act

ing is 1000N. What is the cars mass?
Physics
1 answer:
otez555 [7]3 years ago
4 0

Answer:

net force= 2000-1000=1000

a=v-u/t=5/20=1/4

m=?

m=f/a

=1000÷1/4=4000kg

You might be interested in
Dolphins communicate using compression waves (longitudinal waves).  Some of the sounds dolphins make are outside the range of hu
White raven [17]
The dolphin would send an underwater message because the water is denser than air and therefore the sound would be louder and would travel faster. The denser the object the faster the sound travels.
8 0
3 years ago
Read 2 more answers
10. CALCULATE: Find the amount of power used in each of the following examples. Show your calculations. a. You use a force of 10
tekilochka [14]

Answer:

please find  attached pdf

Explanation:

Download pdf
3 0
2 years ago
I KNOW YALL SEE THIS I NEED HELP GOD WILL GIVE U MANY BLESSING HELP A POOR SOUL OUT THE RECENT QUESTIONSSSSSSSSSSSSS. ://///
photoshop1234 [79]

Answer:

ok

Explanation:

will do

4 0
2 years ago
Read 2 more answers
Find the final velocity
Verizon [17]

Answer: v = 4.4 m/s

Explanation:

In the absence of friction, the total mechanical energy will be constant

KE₀ + PE₀ = KE₁ + PE₁

0 + mg(6) = ½mv₁² + mg(5)

½mv₁² = mg(6 - 5)

v = √(2g(1)) = 4.4 m/s

3 0
2 years ago
A radio wave transmits 38.5 W/m2 of power per unit area. A flat surface of area A is perpendicular to the direction of propagati
Margaret [11]

Answer:

P=2.57\times 10^{-7}\ N/m^2

Explanation:

Given that,

A radio wave transmits 38.5 W/m² of power per unit area.

A flat surface of area A is perpendicular to the direction of propagation of the wave.

We need to find the radiation pressure on it. It is given by the formula as follows :

P=\dfrac{2I}{c}

Where

c is speed of light

Putting all the values, we get :

P=\dfrac{2\times 38.5}{3\times 10^8}\\\\=2.57\times 10^{-7}\ N/m^2

So, the radiation pressure is 2.57\times 10^{-7}\ N/m^2.

3 0
3 years ago
Other questions:
  • What is the name of a very porous igneous rock that is so light that it floats?
    14·1 answer
  • When Isabella pushes a box of mass 5.25 kilograms with a force of 15.7 newtons, it accelerates by a rate of 2.50 meters/second2.
    12·2 answers
  • Alicia está a punto de perder su bus. En un desesperado intento, corre a una velocidad constante de 5 m/s. Cuando está a 15 m de
    5·1 answer
  • A simply supported beam, 4" wide, 6" deep, and 16 ft. long carries a uniformly distributed load of 300 lb/ft (a) compute the she
    14·1 answer
  • Why is the restoring force in Hooke's law a negative value?
    12·2 answers
  • A city is going to build a small power plant to supply extra electricity. Which of the following is a cost associated with using
    13·2 answers
  • A motobike's tire rotates with a constant angular speed of 62.8 rad/s. The radius of a tire is 30cm. Assuming that no slipping o
    12·1 answer
  • Complete the statement below with the correct term.
    5·2 answers
  • A hollow Spherical conductor of radius 12 cm is
    11·1 answer
  • This is the third time I’m asking, please, On a wet road, is a higher coefficient of friction on the tires safer or a lower one
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!