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juin [17]
3 years ago
10

A cable car is being pulled up a mountain at 7.5 meters per second. Usually, the car takes 120 seconds to move all the way up th

e mountain. If its velocity stays constant, how much time will it take the cable car to move 39 meters?
Physics
1 answer:
djyliett [7]3 years ago
5 0

Answer:

5.2 s

Explanation:

From the question given above, the following data were obtained:

Velocity = 7.5 m/s

Displacement = 39 m up

Time =?

The time taken for the cable cab to get to 39 m can be obtained as follow:

Velocity = Displacement / Time

7.5 = 39 / time

Cross multiply

7.5 × time = 39

Divide both side by 7.5

Time = 39 / 7.5

Time = 5.2 s

Thus, the time taken for the cable cab to get to 39 m up is 5.2 s

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it takes you 30 minutes to walk an average velocity of 2.om/s south to school. What is your displacement?
slega [8]

Answer:

3600 m SOUTH

Explanation:

avg velocity= (change displacement)/(change in time)

2.0 m/s= x/ (1800 s)

displacement= (2.0 m/s * 1800s)= 3600 m SOUTH

.......

sign explanation

2.0 m/s south= -2.0 m/s (downwards direction)

-2.0 m/s= x/ (1800 s)

x= -3600 m

4 0
4 years ago
Using the figure shown, if I₃= 1.17 A, then (I₁ , I₂) A is:
Tanzania [10]

The value of the current in each arm of the circuit is given by Kirchhoff's

Rules.

  • The correct option for (I₁, I₂) is; b-. \underline{(1.33, \ 0.17)}

Reasons:

By Kirchhoff's junction rule, we have that the sum of current at a junction is given as follows;

  • \displaystyle \mathbf{ \sum \limits_{k = 1}^ n I_K} = 0

Which by the direction of the currents in the given circuit diagram, we have;

  • I₁ - (I₃ + I₂) = 0

Therefore;

I₁ = I₃ + I₂

According to Kirchhoff's loop rule theory, we have;

  • \displaystyle \mathbf{\sum \limits_{k = 1}^ n V_K} = 0

In the loop having the 2 Volts emf., we have;

-I₃·R₁ + 2 + I₂·R₂ = 0

I₃ = 1.17 A

R₁ = 2 Ω

R₂ = 2 Ω

Which gives;

-1.17 × 2 + 2 + I₂×2 = 0

I₂ × 2 = 2.34 - 2 = 0.34

I₂ = 0.34 ÷ 2 = 0.17

I₂ = 0.17 A

From the loop having the 7 Volts emf. we have;

7 - 0.17×2 - I₁ × 4 - I₁ × 1 = 0

Which gives;

7 - 0.34 - 5·I₁ = 0

5·I₁ = 7 - 0.34 = 6.66

I₁ = 6.66 ÷ 5 = 1.332

Therefore;

  • \underline{\mathbf{(I_1, \,  I_2)} = (1.33, \, 0.17)}

Learn more about electric circuits here:

brainly.com/question/2608877

8 0
3 years ago
I need help please!!
scZoUnD [109]

Answer:

A , C , E

they are all multiples of 3

5 0
3 years ago
All of the following are examples of electric current except _____? A.Charges flowing in one direction through a circuit B. Char
eimsori [14]
C. 

A discharge is a one-time thing, like a lighting bolt, whereas a current is a <em>flow </em>of energy, like a river.
6 0
4 years ago
There was nothing Leon, the
Anastaziya [24]

It is not possible for Leon to be involved in a motor crash, in which the car is demolished without sustaining an injury except Leon is playing a video game.

<h3>What is a motor crash?</h3>

A motor crash is the event in which a motor vehicle is involved in a collision amongst another motor vehicle, pedestrian, animal, or stationary object.

<h3>Impact of motor crash</h3>

A motor crash can cause the following;

  • total damage of the car
  • breaking of bones of the driver
  • damage of properties colliding with the car

Thus, it is not possible for Leon to be involved in a motor crash, in which the car is demolished without sustaining an injury except Leon is playing a video game. In the video game he will not be involved physically with the motor crash.

Learn more about motor crash here: brainly.com/question/26366483

#SPJ1

4 0
2 years ago
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