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
Sauron [17]
4 years ago
8

On his way to class, a student on a skateboard is accelerating on a downhill stretch. Which of the following statements is true?

(Select all that apply.)
A.The skateboarder's acceleration is perpendicular to the net force.
B.The skateboarder is moving in the direction of the net force.
C.The skateboarder's acceleration is in the direction of the net force.
D.The skateboarder is subjected to a net external force in the direction of motion.
Physics
1 answer:
sasho [114]4 years ago
3 0

Answer:

B is correct

Explanation:

Because of gravity

You might be interested in
What is the metric unit for length??
blondinia [14]
Metric unit of lenght is meter (m.)
4 0
4 years ago
An iron vat is 11 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?
RoseWind [281]

Answer:

The change in length is 0.01056 m.

Explanation:

Given that,

Length = 11 m

Temperature = 20°C

Pressure = 1 atm

Boiling temperature = 100°C

We need to calculate the length

Using formula of change in linear expansion

\dfrac{\Delta L}{L}=\alpha_{l}\Delta T

\Delta L=L\times\alpha_{l}\times(T_{f}-T_{i})

Put the value into the formula

\Delta L=11\times12\times10^{-6}\times(100-20)

\Delta L=11\times12\times10^{-6}\times80

\Delta L=0.01056\ m

Hence, The change in length is 0.01056 m.

5 0
4 years ago
What is solubility,malleability and ductility
docker41 [41]
Solubility is the ability to dissolve in liquids like water or organic solvents.
Malleability is the ability to bend and be hammered without breaking.
Ductility is when a material can be stretched into wires.
5 0
3 years ago
A car travels 90 meters due north in 15 seconds. Then the car
tatyana61 [14]
I got you kid It’s A- 2.5m/sb
6 0
3 years ago
A proton is projected in the positive x direction into a region of a uniform electric field →E =(-6.00 × 10⁵) i^ N/C at t=0 . Th
anzhelika [568]

The acceleration of the proton that is  projected in the positive x direction into a region of a uniform electric field is  5.76×〖10〗^13 m/s^2

The product of the field's strength and the charge's strength yields the magnitude of the electric force acting on a charge traveling in a magnetic field region.

The electric force magnitude acting on the charge is expressed in the equation below.

F=|→E|×|q|

F=|-6.00×〖10〗^5 N/C|×||+1.602×〖10〗^(-19) C|

F=9.612×〖10〗^(-14) N

Newton's second law of motion states that the magnitude of a force is equal to the product of a proton's mass and its acceleration. Where the magnitude of the acceleration of the proton is ;

a=F/m  

Where  F is the force and m is the mass;

Inserting the values into the equation,

a=(9.612×〖10〗^(-14) N)/(1.67×〖10〗^(-27) kg)

a=5.76×〖10〗^13 m/s^2

Therefore, the acceleration of proton is 5.76×〖10〗^13 m/s^2 #SPJ4

brainly.com/question/13263306

#SPJ4

7 0
1 year ago
Other questions:
  • An electric iron operating at 120 volts draws 10. amperes of current. how much heat energy
    9·1 answer
  • The size particles in a solution is about 1nm (1nm= 0.000000001 m). Write 0.000000001m in scientific notation.
    5·1 answer
  • My questions are in the picture: <br>Please help.
    7·1 answer
  • ICl has a higher boiling point than Br2. What is the best explanation for this?
    8·1 answer
  • Parasaurolophus was a dinosaur whose distinguishing feature was a hollow crest on the head. The 1.5-m-long hollow tube in the cr
    5·1 answer
  • The speed of a moving bullet can be deter-
    13·1 answer
  • Does the shape of a skateboard affect how will travel?
    12·1 answer
  • How is fitness walking beneficial?
    11·2 answers
  • How and why does a cell phone use 2 frequencies of waves at once
    6·1 answer
  • When heat is added to ice, the first change it goes through will be which of the following?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!