Ask question

Ask question

All categories

4 years ago

8

how much energy must be transferred to a normal incandescent bulb (efficiency 0.05) for it to transfer 9J of energy by light?

1 answer:

oksian1 [2.3K]4 years ago

3 0

Answer:

Revise energy transfers and use sankey diagrams to calculate the efficiency of these conversions with BBC ... Efficiency is a measure of how much useful energy is converted. Part of ... This is the Sankey diagram for a typical filament lamp: 100 joules of electrical energy is converted to 10 joules of light energy and 90 joules.

Explanation:

You might be interested in

Whenever you work a physics problem you should get into the habit of thinking about whether the answer is physicallyrealistic. T

nata0808 [166]

Answer:

a. No, typical small pickup truck springs are not large enough to compress 0.61{\rm m}.

Explanation:

8 0

3 years ago

How dose an exam question outed from text book

Verizon [17]

Answer:

In which school you are???

Explanation:

4 0

3 years ago

The motion of a free falling body is an example of........................motion

nirvana33 [79]

A body that is falling is an example of gravity at work.

7 0

3 years ago

. In a physics lab, you attach a 0.200-kg air-track glider to the end of an ideal spring of negligible mass and start it oscilla

cluponka [151]

Answer:

Spring constant, k = 1.16 N/m

Explanation:

It is given that,

Mass of the air track, m = 0.2 kg

Time, t = 2.6 s

Let T is the time period of the spring. The expression for the time and spring constant is given by :

$T=2\pi \sqrt{\dfrac{m}{k}}$

$k=\dfrac{4\pi^2m}{T^2}$

$k=\dfrac{4\pi^2\times 0.2}{(2.6)^2}$

k = 1.16 N/m

So, the spring’s force constant is 1.16 N/m. Hence, this is the required solution.

6 0

3 years ago

Discuss how the passage of time can affect the brain ? , comment on how human memory works or doesn't work. include memory kids

sergiy2304 [10]

Answer:

the stored memory undergoes important changes, as revealed by the behavioral outcomes of its retrieval.

Explanation:

6 0

3 years ago