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natita [175]
2 years ago
15

Imagine that you are a circus performer riding a uni-cycle (forwards) across the stage. What is the direction of the angular vel

ocity of the single wheel?
Physics
1 answer:
Sergio039 [100]2 years ago
3 0

The direction of the angular velocity of the single wheel is the clockwise direction

<h3>Angular velocity</h3>

The angular velocity is the number of revolutions per second of the single wheel. It is given by ω = v/r where

  • v = linear speed of the wheel and
  • r = radius of the wheel.
<h3>Direction of the angular velocity of the single wheel</h3>

Since the wheels moves forward and the velocity of the wheel is always tangential to the wheel causing it to move forward, its angular velocity is in the clockwise direction

So, the direction of the angular velocity of the single wheel is the clockwise direction

Learn more about angular velocity here:

brainly.com/question/20912191

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A current of 1.75 A flows through a 55.4 Ω resistor for 9.5 min. How much heat was generated by the resistor? Answer in units of
kirill115 [55]

Answer:

9.67\times 10^4 J

Explanation:

We are given that

Current=I=1.75 A

Resistance =R=55.4 ohm

Time=t=9.5 min=9.5\times 60=570 s

1 min=60 s

We have to find the heat generated by the resistor.

We know that

Heat=E=I^2Rt

Using the formula

Heat,E=(1.75)^2\times 55.4\times 570=9.67\times 10^{4} J

Hence, the heat generated by the resistor =9.67\times 10^4 J

6 0
3 years ago
According to the inverse square law of light, if you double your distance to a source, the brightness will...
GalinKa [24]

Answer:

a. decrease by a factor of 3.

Explanation:

The intensity of light is inversely proportional to the square of distance.

I ∝1/d^2

or

I= k/d^2

where k is a constant

so, if d becomes 2d , I will be come I/4

Therefore, intensity will a. decrease by a factor of 3.

6 0
3 years ago
Read 2 more answers
A dynamite blast at a quarry launches a rock straight upward, and 1.7 s later it is rising at a rate of 17 m/s. Assuming air res
Shtirlitz [24]

Answer:

(a) v_0= 34m/s

(b) v=14m/s

Explanation:

We can derive the initial speed of the rock from the equation of the speed in function of the time:

v=v_0-gt\\\\\implies v_0=v+gt

Using the given values for the speed at time t=1.7s, we get:

v_0=17m/s+(9.8m/s^{2})(1.7s)=34m/s

In words, the speed of the rock at launch is 34m/s (a).

Next, we use this to calculate the speed at t=4.9s:

v=v_0-gt\\\\v= 34m/s-(9.8m/s^{2})(4.9s)=-14m/s

This means that the speed of the rock at 4.9s after the launch is 14m/s (b), and the negative sign means that it is moving downwards.

3 0
3 years ago
A car increases its velocity from 0 m/s to 15 m/s in 6 seconds. Calculate its acceleration in n m/s/s. Round your answer to one
iren [92.7K]

Answer:

i cant find answer sorry :((( wish you best of luck <333

7 0
3 years ago
Can any one give me examples of cadmium and Zinc together?
gayaneshka [121]
Cadmium zinc telluride, zinc cadmium sulfide
7 0
3 years ago
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