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andre [41]
3 years ago
13

11. You sit at the outer rim of a Ferris wheel that rotates 2 revolutions per minute (RPM). What would your rotational speed be

if you were instead clinging to a position halfway from the center to the outer rim?
Physics
1 answer:
aalyn [17]3 years ago
4 0
If you are instead clinging to a position halfway from the center to the outer rim of the Ferris wheel, YOUR ROTATIONAL SPEED WILL STILL BE 2 REVOLUTION PER MINUTE.
This is because, every part of the wheel is moving with the same speed, so it does not matter where you sit on the wheel, the rotation per minute will still be the same. It is just like travelling inside a motor car, it does not matter whether you are sitting in the front passenger seat or at the back, the speed of the car remains the same.
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What is drag? In what situations might it act on the force of gravity?
stepan [7]
Drag is passive, therefore it does not act on gravity. Drag is a mechanical resistance to motion. If the motion in question was induced by gravity drag it can impede that motion, but has no effect on the gravity. 

hope this helps!
7 0
3 years ago
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Microwave ovens emit microwave energy with a wavelength of 12.3 cm. What is the energy of exactly one photon of this microwave r
Valentin [98]
The energy of a photon is proportional to the speed of light and inversely proportional to the wavelength. The constant of proportionality is Planck's constant, <span>6.626 * 10^-34 Js</span>

E = hc/ {wavelength} 
E = [ 6.626 * 10^-34 Js * 2.997 * 10^8 m/s ] / 0.124 m 
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4 0
3 years ago
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Work out the current through an electric heater with a power of 1.38kW if it uses the 230V mains supply.
love history [14]

Answer:

I = 6 A

Explanation:

Given that,

Power of an electric heatr, P = 1.38 kW

The voltage of the mains supply, V = 230 V

We need to find the current through the heater. The electric power in terms of  voltage and current is given by :

P=V\times I\\\\I=\dfrac{P}{V}\\\\I=\dfrac{1.38\times 10^3}{230}\\\\I=6\ A

So, the current through an electric heater is 6 A.

5 0
3 years ago
A ball whirls around in a vertical circle at the end of a string. The other end of the string is fixed at the center of the circ
never [62]

Answer:

T_b=m(g+\frac{v_b^2}{R})

Explanation:

At the bottom the tension would be upwards and the weight downwards, their difference being the centripetal force. Taking the upwards direction as positive we then have:

T_b-mg=F_{cp}=ma_{cp}=m\frac{v_b^2}{R}

where we have used the equation for centripetal acceleration. Thus we have:

T_b=m(g+\frac{v_b^2}{R})

4 0
3 years ago
Why do prokaryotic cells usually reproduce more quickly than eukaryotic cells?
Andrei [34K]

Answer: the answer is A

Explanation: im pretty sure this is right, its been a little bit since i had to study this

5 0
3 years ago
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