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kenny6666 [7]
4 years ago
8

The true brightness of an object is called its

Physics
2 answers:
g100num [7]4 years ago
8 0
<span>The true brightness of an object is called its luminosity. It is the total amount of energy emitted by bright or meteorological objects over a period of time. It has the SI unit of joules per second or watts. So the answer is letter A. Intensity is the measure of how strong the substance or object is when it projects something. Magnitude is a measure of how great is the size the object produces. Viscosity is the measure of flow of a substance.</span>
schepotkina [342]4 years ago
7 0

The answer is A.luminosity

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A negative test charge will accelerate toward regions of ________ electric potential and ________ electric potential energy.
dalvyx [7]

Answer: higher and lower

Explanation:

 charge in an electric field will experience a force in the direction of decreasing potential energy. Since the electric potential energy of a negative charge is equal to the charge times the electric potential the direction of decreasing electric potential energy is the direction of increasing electric potential.

5 0
3 years ago
Which answer best explains why the contents of a warm can of carbonated drink might rush out of the can faster than the contents
Flura [38]

Answer:

its A

Explanation:

3 0
3 years ago
The record time for a Tour de France cyclist to ascend the 1100-mm-high Alpe d'Huez is 37.5 minmin. The rider and his bike had a
katen-ka-za [31]

Answer:

1945.6 W

Explanation:

We are given that

Height,h=1100 m

Time,t=37.5 min=37.5\times 60=2250 s

1 min=60 s

Mass,m=65 kg

Power,P=700 W

We have to find the his total metabolic power.

Power,=P'=\frac{W}{t}=\frac{mgh}{t}=\frac{65\times 9.8\times 1100}{2250}=311.4 W

Where g=9.8m/s^2

Efficiency =25%

Therefore,Power,P'=\frac{311.4}{0.25}=1245.6 W

Total metabolic power=P+P'=700+1245.6=1945.6 W

7 0
3 years ago
An electron of mass 9.11×10-31kg leaves one end of a TV picture tube with zero initial speed and travels in a straight line to t
SOVA2 [1]

Answer:

(A) Acceleration will be 240.3846\times 10^{12}m/sec^2

(b) Time taken will be 1.4\times 10^{-8}sec

(c) Force will be 2189.9\times 10^{-19}N              

Explanation:

We have given that electron starts from rest so initial velocity u = 0 m/sec

Final velocity v=2.50\times 10^6m/sec

Mass of electron m=9.11\times 10^{-31}kg

Distance traveled by electron s=1.30cm =0.013m

From third equation of motion we know that v^2=u^2+2as

(a) So (2.5\times 10^6)^2=0^2+2\times a\times 0.013

a=240.3846\times 10^{12}m/sec^2

(b) From first equation of motion we know that v = u+at

So 2.50\times 10^6=0+240.3846\times 10^{12}t

t=0.014\times 10^{-6}=1.4\times 10^{-8}sec

(c) From newton's law we know that force

F=ma=9.11\times 10^{-31}\times 240.3846\times 10^{12}=2189.9\times 10^{-19}N

7 0
3 years ago
What is the weight of a ring tailed lemur that has a mass of 10 kg? Use w = mg (g = -9.8 m/s^2)
marusya05 [52]

m = 10 kg

g = -9.8 m/s2

w = m * g

w= -9.8 * 10

w= -98 N

4 0
3 years ago
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