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Dafna1 [17]
3 years ago
14

(3.16_Q2) Which weights would you use on a single thread to create a 6.86 N force? Question 2 options: Weight IDs A, B, C, D Wei

ght IDs D, E, F Weight IDs E, F Weight IDs B, C, E, G Question 3 (1 point) (3.16_Q3) Which weights would you use on a single thread to create a 7.84 N force? Question 3 options: Weight IDs A, B, C, D Weight IDs D, E, F Weight IDs E, F Weight IDs B, C, E, G Question 4 (1 point) (3.16_Q4) Which weights would you use on a single thread to create a 12.45 N force? Question 4 options: Weight IDs A, B, C, D Weight IDs D, E, F Weight IDs E, F Weight IDs B, C, E, G Question 5 (1 point) (3.16_Q5) Which weights would you use on a single thread to create a 1.76 N force? Question 5 options: Weight IDs A, B, C, D Weight IDs D, E, F Weight IDs E, F Weight IDs B, C, E, G 0 of 5 questions saved
Physics
1 answer:
Tomtit [17]3 years ago
5 0

1. E,F

2. D,E,F

3. B,C,E,G

4. A,B,C,D

I did the test! :)

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When an electron jumps from high-to low-energy levels:
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Answer:

B. A wave of visible light is produced.

Explanation:

The visible light spectrum is in the centre of the Electromagnetic Spectrum, so any time an electron jumps from high to low levels of radiation, it has to cross through the visible spectrum.

I hope this is correct, and as always, I am joyous to assist anyone at any time.

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4 years ago
Two cars approach each other. How does the
Lemur [1.5K]

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<u>The car's fast. The ground isn't moving.</u>

Hope this helped! :D

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2 years ago
Bacteria move back and forth by using their flagella (structures that look like little tails). Speeds of up to 50 μm/s ⎛ ⎝50×10−
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Explained

Explanation:

Displacement is the change in the position of an object with reference to a starting point. for displacement to occur the position of the object must change.

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4 0
4 years ago
A 1100 kg car rounds a curve of radius 68 m banked at an angle of 16 degrees. If the car is traveling at 95 km/h, will a frictio
Mariulka [41]

Answer:

Yes. Towards the center. 8210 N.

Explanation:

Let's first investigate the free-body diagram of the car. The weight of the car has two components: x-direction: towards the center of the curve and y-direction: towards the ground. Note that the ground is not perpendicular to the surface of the Earth is inclined 16 degrees.

In order to find whether the car slides off the road, we should use Newton's Second Law in the direction of x: F = ma.

The net force is equal to F = \frac{mv^2}{R} = \frac{1100\times (26.3)^2}{68} = 1.1\times 10^4~N

Note that 95 km/h is equal to 26.3 m/s.

This is the centripetal force and equal to the x-component of the applied force.

F = mg\sin(16) = 1100(9.8)\sin(16) = 2.97\times10^3

As can be seen from above, the two forces are not equal to each other. This means that a friction force is needed towards the center of the curve.

The amount of the friction force should be 8.21\times 10^3~N

Qualitatively, on a banked curve, a car is thrown off the road if it is moving fast. However, if the road has enough friction, then the car stays on the road and move safely. Since the car intends to slide off the road, then the static friction between the tires and the road must be towards the center in order to keep the car in the road.

5 0
4 years ago
name the device used often to change the resistance without changing the voltage source in an electric circuit
timofeeve [1]
<em>the devices which are used to change the resistance in a circuit are called
<u>resisitors...
</u>the fact that they effect the voltage or not simply depends upon the type of resistor used in the circuit ...:)

</em>
5 0
3 years ago
Read 2 more answers
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