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dalvyx [7]
3 years ago
9

A circular track has an inside cirumference of 220m. If the width of track is 3.5m, find its outer circumference.​

Physics
1 answer:
mars1129 [50]3 years ago
8 0

Answer:

Lc = 242 [m]

Explanation:

The circumference is defined as the circumference length of a circle, this length can be calculated by means of the following equation.

L_{c}=2*\pi *r

where:

Lc = circumference length = 220 [m]

r = radius [m]

Now we can clear r

r=\frac{L_{c}}{2*\pi } \\\\r = \frac{220}{2*\pi }\\\\r = 35.01 [m]

Now we can determine the outer radius with the inner diameter plus the width of the track.

R = r + 3.5

R = 35.01 + 3.5 = 38.51 [m]

The outer circumference is:

L_{c} = 2*\pi *38.51 \\L_{c} = 242 [m]

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Is block b speeding up or slowing down once it is set into downward motion and the cat is on block a?
stepan [7]

Answer:

The answer is "Slowing down ".

Explanation:

please find the complete question in the attached file.

In this question, if the block B weight were accounted for by kinetic the friction of frame A, because the blocks pushed at a consistent speed throughout the beginning.

Afterward, on block A, the resistance intensity rises, which allows frames to also be negative, which is defined in the graph, that's why the answer Slowing down is correct.

6 0
3 years ago
What is the potential difference between the plates of a 3.7-f capacitor that stores sufficient energy to operate a 75.0-w light
Elena L [17]

The potential difference between the plates will be 1552 Volts.

<h3>What is a potential difference?</h3>

Voltage, or the difference in electric potential between two points, is defined as the amount of labor per unit of charge needed to move a test charge between the two points.

Given that a 3.7-f capacitor that stores sufficient energy to operate a 75.0-w

The potential difference will be calculated by the formula below:-

Q = I t            

Where I = charge / time

Q = V * C    

V C = I t

V = I t / C

V = 75 C/s x 60 sec / 2.9 faraday

V =  1552 Volts

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4 0
1 year ago
List down atleast five activities where friction gave you an undesirable experience
Step2247 [10]

Answer:

Rug burn, Indian burn done to you by a friend, friction from the road causes your car to accelerate at a slower rate, The cylinder heads in an engine, When trying to move a heavy object across a rough surface

Explanation:

7 0
3 years ago
Read 2 more answers
A machine exerts a 100 N force to the right over a 5.00 meter length in 4.00 seconds. Calculate the power output of this machine
bixtya [17]

125 W is the power output of this machine.

Answer:

Explanation:

Power is defined as the amount of work done on the system to move that system from its original state within the given time interval. So it can be determined by the ratio of work done with time interval. As work done is the measure of force required to move a system to a certain distance. Work done is calculated as product of force with displacement.

So in the present case, the force is given as 100 N, the displacement is given as 5 m and the time is given as 4 s, then power is

Power = \frac{Work done}{Time}

As Work done = Force acting on the machine × Displacement

So Power = \frac{(Force * Displacement)}{Time}

Power = \frac{(100*5)}{4}=125 W

So, 125 W is the power output of this machine.

6 0
3 years ago
an object is 40M below the surface of sea water of density 1020 kg/m3 calculate the pressure difference
olga nikolaevna [1]

Answer:

P = 400248 [Pa]

Explanation:

We can calculate the hydrostatic pressure exerted by a column of liquid by means of the following equation.

P=Ro*g*h

where:

Ro = density = 1020 [kg/m³]

g = gravity acceleration = 9.81 [m/s²]

h = depth = 40 [m]

Therefore:

P=1020*9.81*40\\P=400248 [Pa]

8 0
3 years ago
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