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bearhunter [10]
3 years ago
12

Need help ASAPJenna made an electric circuit as seen in the picture. She placed a thermometer near her light bulb. After the lig

ht bulb was turned on for an hour, what did she MOST LIKELY observe?
A) The bulb glowed brighter over time.
B) The temperature in the thermometer went up.
C) The temperature in the thermometer went down.
D) Both the light and temperature remained the same over time.
Physics
2 answers:
zepelin [54]3 years ago
7 0
B) The temperature in the thermometer went up.
maks197457 [2]3 years ago
7 0
B) The temperature in the thermometer went up.
Hope it helps :D
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A train travels 55 kilometers in 2 hours, and then 52 kilometers in 5 hours. What is its average speed?
bulgar [2K]

The formula for working out speed is distance ÷ time.

55 km ÷ 2 hours = 27.5 km/h (average speed for first part of journey)

52km ÷ 5 hours = 10.4 km/h (average speed for second part of journey)

(27.5 + 10.4) ÷ 2 = 18.95 km/h (average speed throughout the journey)

4 0
3 years ago
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Which of these will NOT help reduce c02 levels in the atmosphere?
denpristay [2]

Answer:

the answer would be "using more heat" btw

Explanation:

4 0
2 years ago
What does it mean to say that some elements are reactive and form ions easily whereas others do not?
butalik [34]

Answer:

Some elements are reactive because the outermost energy levels of their atoms are only partially filled. Therefore, these atoms can easily gain or lose electrons to form ions. The atoms of nonreactive elements have filled outermost energy levels

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hope this answers your ?

4 0
1 year ago
A 48.0-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocit
Kipish [7]

Answer:

F = 47.6 N

Explanation:

  • Newton's 2nd law can be expressed as the rate of change of the total momentum, respect of time, as follows:

       F = \frac{\Delta p}{\Delta t}

  • So, in order to find the average force exerted by the skater on the wall, we can find the change in momentum due to the force exerted by the wall (which is equal and opposite to the one exerted by the skater), and  divide it by the time interval , as follows:

       F_{wall} = \frac{\Delta p}{\Delta t} =\frac{(48.0 kg*(-1.06m/s)}{1.07s} = -47.6 N

       ⇒ Fsk = 47.6 N (normal to the wall)

3 0
3 years ago
In any energy transformation, there is always some energy that gets wasted as non-useful heat.
Nady [450]
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8 0
3 years ago
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