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Viefleur [7K]
3 years ago
15

An elevator of 3 × 10^4N is raised to a height of 100m in 20s . The work done by electric motor is equivalent to ?​

Physics
1 answer:
STatiana [176]3 years ago
5 0

Answer:

we neglect the time data

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Hydrogen gas (H2) and oxygen gas (O2) react to form liquid hydrogen peroxide (H2O2). Which statement is true about the reaction?
miskamm [114]
HYDROGEN GAS + OXYGEN GAS= HYDROGEN PEROXIDE                                  H2+O2=H2O2                                                                                                                      HYDROGEN PEROXIDE IS A LIQUID BECAUSE HYDROGEN PEROXIDE CAN NEVER BE A SOLID BECAUSE TWO LIQUIDS CAN NEVER FORM A GAS IT IS IMPOSSIBLE NO MATTER THE CONDITION
4 0
3 years ago
Choose all of the statements that are true about electromagnets: 1. Electromagnets are permanent and always have a magnetic fiel
Nitella [24]

Answer:

2. electromagnets can be made stronger by adding more coils to the solenoid.

3. electromagnets can be made stronger by increasing the strength of the electrical source.

Explanation:

Electromagnets are not permanent, they act as magnets when current runs through its coils. They can be stronger by increase the current that goes through the coil surrounding them,. This can be done two ways: 1) increasing the actual current intensity, or 2) increasing the number of coils that wrap around them.

7 0
4 years ago
Who is galileo galilei
ruslelena [56]
Heres a simple answer
Galileo Galilei was an Italian polymath. Galileo is a central figure in the transition from natural philosophy to modern science and in the transformation of the scientific Renaissance into a scientific revolution.
3 0
3 years ago
Read 2 more answers
This graph shows velocity vs. time. What does the slope of the line represent? A. speed B. force C. acceleration D. distance
PilotLPTM [1.2K]
I believe the answer is C. Acceleration. (:
8 0
4 years ago
An electric lamp consumes 60 watts at 220 volts. How many dry cells of EMF 1.5 volt and internal resistance 1 ohm are required t
Delvig [45]

Answer:

179.3 cells

Explanation:

The lamp requires a current of 60W/220V = 0.273A

The dry cells each have an internal resistance of 1Ω.

The number of cells required in series equals 220V divided by the cell's voltage minus their internal voltage drop under a load current of 0.273A.

= 220V/(1.5V–1Ω*0.273A)

=179.3 cells

7 0
3 years ago
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