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
makvit [3.9K]
3 years ago
6

If the average time it takes for the cart from point 1 to point 2 is 0.2 s, calculate the angle θ from the horizontal of the tra

ck. Assume the track is frictionless. Hint: use the definitions of acceleration and Newton’s second law.
Physics
1 answer:
inn [45]3 years ago
5 0

Answer:

hehe

Explanation:

I dont know because I am a noob ant study

You might be interested in
Need help identifying the rest of the elements!
gregori [183]
I think that number five is lithium
6 0
3 years ago
A 1500 kg car, initially traveling at 22.0 m/s, hits its brakes and skids to a stop. Determine the work done by friction.
Sedbober [7]

Answer:

<em>The work done by the car is 363 kJ</em>

Explanation:

Work : Work is said to be done when a Force moves an object through a certain distance. Work and Energy are interchangeable because they have the same unit. The unit of work is Joules (J).

Mathematically work done can be expressed as,

E = W = 1/2mv²

W =  1/2mv²................................ Equation 1

Where E = Energy, W = work done, m = mass of the car, v = velocity of the car

<em>Given: m=1500 kg, v=22 m/s</em>

<em>Substituting these values into equation 1</em>

<em>W = 1/2(1500)(22)²</em>

<em>W = 750 × 484</em>

<em>W = 363000 J</em>

<em>W = 363 kJ</em>

<em>Thus the work done by the car is 363 kJ</em>

8 0
3 years ago
All of the following are involved in the geological process except (2 points) gravity temperature changes thawing and freezing e
ki77a [65]
That us true so I think it is a
5 0
3 years ago
Calculate the radius of the orbit of a proton moving at 2.2x10^6 m/s in a magnetic field 0.7 T where v and B are perpendicular.
Juliette [100K]

Answer:

3.28 cm

Explanation:

To solve this problem, you need to know that a magnetic field B perpendicular to the movement of a proton that moves at a velocity v will cause a Force F experimented by the particle that is orthogonal to both the velocity and the magnetic Field. When a particle experiments a Force orthogonal to its velocity, the path it will follow will be circular. The radius of said circle can be calculated using the expression:

r = \frac{mv}{qB}

Where m is the mass of the particle, v is its velocity, q is its charge and B is the magnitude of the magnetic field.

The mass and  charge of a proton are:

m = 1.67 * 10^-27 kg

q = 1.6 * 10^-19 C

So, we get that the radius r will be:

r =  \frac{1.67 * 10^-27 kg * 2.2*10^6 m/s}{1.6 * 10^-19 C* 0.7 T} = 0.0328 m, or 3.28  cm.

8 0
3 years ago
??? True or false. An element can only exist as an individual atom.
KengaRu [80]
I think it's false because Oxygen is diatomic so it's found as O2 which means that it has two atoms of itself.
7 0
3 years ago
Other questions:
  • Meg walks 5 blocks south and then turns around and walks 8 blocks back to the north. The distance that she walks is 13 blocks. W
    11·1 answer
  • Leyden jars function similarly to modern _____________, which store electric charge in electronic circuitry.
    13·1 answer
  • A star of mass 2.0 ✕ 1029 kg that is 1.8 ✕ 1020 m from the center of a galaxy revolves around that center once every 2.2 ✕ 108 y
    7·1 answer
  • What is the acceleration of a softball if it has a mass of 0.5 kg and hits the cathers glove with a force of 25n
    5·1 answer
  • The gear motor can develop to 1/2 hp when it turns at 300 rev/min. If the shaft has a diameter of 1/2 in. determine the maximum
    11·1 answer
  • Water towers store water above the level of consumers for times of heavy use, eliminating the need for high-speed pumps. How hig
    5·1 answer
  • Everyone i need help so much
    11·2 answers
  • Answer this plzzzzzzzzzzzzz
    8·1 answer
  • Help me please I wrote some but I am still stuck
    10·1 answer
  • Which type of wave can only be transmitted through matter?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!