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bezimeni [28]
3 years ago
8

How could you increase the amount of kenitic energy

Physics
1 answer:
Fiesta28 [93]3 years ago
8 0

Answer:

As You know kinetic Energy is equal (mv^2)/2

You can increase it by increasing the mass(keeping the velocity)

Or You can add velocity

Explanation:

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1.D 2.A 3.A 4.im not sure please help 5.false One light bulb in a string of lights goes out. This causes all of the other lights
Amiraneli [1.4K]
Welll ... if you read the question, you'll see what a jumbled mess you actually
posted, but I think I can pull enough out of it to give you some answers.

<span>One light bulb in a string of lights goes out. This causes all of the
other lights in the string to also go out. The entire string of lights
must be one series circuit.

2.  When a switch is turned from the off to the on position,
an open circuit is changed to a closed circuit.

3.Early telephone poles had wires that connected inside bell-shaped
glass enclosures like the ones shown below.  (nothing is shown below)
several bell-shaped glass enclosures
These glass enclosures helped to keep the electric current from moving
outside the circuit of wires. The glass enclosures were used as insulators.

4.Use Ohm’s Law to determine the resistance in a circuit if the
voltage is 12.0 volts and the current is 4.0 amps.

Ohms law:        Resistance = (voltage) / (current)

                                             = (12.0 v) / (4.0 amp)

                                             =      3 ohms .

5.  "In a closed circuit, the current only flows from the power source
to an electrical device such as a lamp."

This statement is false.  The current eventually has to get back
to the power source.  If it doesn't then there's no 'circuit', and
nothing works.  That's a big part of the reason why the plug
has 2 prongs on it, and the cord from the plug to the lamp
has 2 wires in it. </span>
6 0
3 years ago
The springs of a 1500 kg car compress 5.00 mm when its 68 kg driver gets into the driver's seat. Part A If the car goes over a b
elena-s [515]

Answer:

the frequency of the oscillation is 1.5 Hz

Explanation:

Given;

mass of the spring, m = 1500 kg

extention of the spring, x = 5 mm = 5 x 10⁻³ m

mass of the driver = 68 kg

The weight of the driver is calculated as;

F = mg

F = 68 x 9.8 = 666.4 N

The spring constant, k, is calculated as;

k = F/m

k = (666.4 N) / (5 x 10⁻³ m)

k = 133,280 N/m

The angular speed of the spring is calculated;

\omega = \sqrt{\frac{k}{m} } \\\\\omega = \sqrt{\frac{133280}{1500} } = 9.426 \ rad/s

The frequency of the oscillation is calculated as;

ω = 2πf

f = ω / 2π

f = (9.426) / (2π)

f = 1.5 Hz

Therefore, the frequency of the oscillation is 1.5 Hz

6 0
2 years ago
Astronomers have seen stars forming within a nebular cloud. As the nebular cloud condenses and its own gravitational attraction
Alenkasestr [34]
Nebular cloud should be the answer, but i believe nuclear fusion is the closest answer, because it fuses together to become a cloud 

hope this helps
3 0
3 years ago
Read 2 more answers
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0800 s, during which
Elena-2011 [213]
The initial velocity of the ball is 0. Applying:
v = u + at
v = 0 + 229 x 0.08
v = 18.3 m/s

a)
Vx = Vcos(∅)
Vx = 18.3cos(52.3)
Vx = 11.2 m/s

b)
Vy = Vsin(∅)
Vy = 18.3sin(52.3)
Vy = 14.5 m/s
5 0
3 years ago
Two points are given in polar coordinates by : (r, θ) = (2.60 m, 50.0°)
alukav5142 [94]

Answer:

The distance between the 2 points is 4.6558 meters.

Explanation:

The distance between 2 points (r_1,\theta _1),(r_2,\theta _2) is given by

d=\sqrt{r_{1}^{2}+r_{2}^{2}-2r_1\cdot r_2cos(\theta _2-\theta _1)}

In our case the given 2 points are (2.60,50.0^{o}),(3.60,-46.0^{o}) hence the distance is

d=\sqrt{2.60^{2}+3.60^{2}-2\cdot 2.60\cdot 3.60\cdot cos(-46.0-50)}\\\\\therefore d=4.6558m

5 0
3 years ago
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