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fomenos
4 years ago
11

PLEASE HELP!!

Physics
1 answer:
Elena-2011 [213]4 years ago
7 0
I think it is Circulatory & muscular because it is Improving your endurance and provides numerous health benefits, including better heart health, protection from injury and weight control..?
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Which transition by an electron will release the greatest amount of energy?
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Answer:

A

Explanation:

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A 50-ω resistor is connected to a 9.0 V battery. How much thermal energy is produced in 7.5 minutes?
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1.2 102j

Explanation:

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If the car travels thrice(3times) around the track,who much is the total distance covered?​
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3 years ago
g Design an experiment you can use to determine the mass of the metal cylinder. When you explain your experiment, be sure to men
kumpel [21]

Answer:

m = \frac{k}{g} x,

graph of x vs m

Explanation:

For this exercise, the simplest way to determine the mass of the cylinder is to take a spring and hang the mass, measure how much the spring has stretched and calculate the mass, using the translational equilibrium equation

              F_e -W = 0

              k x = m g

              m = \frac{k}{g} x

We are assuming that you know the constant k of the spring, if it is not known you must carry out a previous step, calibrate the spring, for this a series of known masses are taken and hung by measuring the elongation (x) from the equilibrium position, with these data a graph of x vs m is made to serve as a spring calibration.

  In the latter case, the elongation measured with the cylinder is found on the graph and the corresponding ordinate is the mass

3 0
3 years ago
How long does a car (1000 kg) have a speed of 30 m/s from a rest if the engine power is 10kw
Lemur [1.5K]

Answer: 90.1 s

Explanation:

Use equation for power:

P=F*V

Use eqation for force:

F=ma

F---force

V---velocity

Vr=om/s

V=30m/s

m=1000kg

P=10000W

---------------------------

P=FV

F=P/V

F=10000W/30m/s

F=333.33N

Use equation for force to find accelartaion.

F=ma

a=F/m

a=333.33N/1000kg

a=0.333 m/s²

Use equation for accelaration to find out time:

a=(V-Vs)/t

t=(V-Vs)/a

t=(30m/s)/(0.333m/s²)

t=90.09 s≈90.1 s

------------------------

5 0
3 years ago
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