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2 years ago

11

Lamp power with what is the current through the lamp when it is connected to a battery ?

1 answer:

shtirl [24]2 years ago

4 0

Answer:

lamp power with what is the current through the lamp when it is connected to a battery ?

Explanation:

If the light bulbs are connected in parallel, the current flowing through the light bulbs combine to form the current flowing in the battery, while the voltage drop is 6.0 V across each bulb and they all glow. One bulb burning out in a series circuit breaks the circuit.

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What is the relationship between dominant and recessive genes

Triss [41]

Dominant genes and recessive genes are both given to a parents offspring. However, not both can be expressed causing the difference of dominant and recessive. Dominant genes are more likely to be expressed and recessive genes are more likely to be repressed.

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3 years ago

When a negatively charged object moves in the opposite direction of an electric force field, the potential energy of the object

Simora [160]

The best and most correct answer among the choices provided by the question is decreases <span>.

</span>The potential energy of the object <span>decreases.</span>

Hope my answer would be a great help for you.
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3 years ago

Read 2 more answers

A. How many calories are needed to raise the temperature of 1 gram of water by 1 °C?

sweet-ann [11.9K]

A) 1 cal

B) 80 cal

C) 540 cal

Explanation:

A)

The amount of heat energy needed to raise the temperature of a certain mass of a substance is given by

$Q=mC\Delta T$

where

m is the mass of the substance

C is the specific heat capacity

$\Delta T$ is the change in temperature

In this problem:

m = 1 g is the mass of water

$C=1 cal/g^{\circ}C$ is the specific heat capacity of water

$\Delta T=1^{\circ}C$ is the change in temperature

So, the heat needed is

$Q=(1)(1)(1)=1 cal$

B)

For a solid substance at its melting point, the amount of heat needed to melt completely the substance is given by

$Q=m\lambda_f$

where

m is the mass of the substance

$\lambda_f$ is the specific latent heat of fusion of the substance

In this problem:

- The ice is already at melting point, 0 °C

- Mass of the ice: $m=1g$

- Specific latent heat of fusion of ice: $\lambda_f=80 cal/g$

So, the heat needed is

$Q=(1)(80)=80 cal$

C)

For a liquid substance at its boiling point, the amount of heat needed to boil completely the substance is given by

$Q=m\lambda_v$

where

m is the mass of the substance

$\lambda_v$ is the specific latent heat of vaporization of the substance

In this problem:

- The water is already at boiling point, 100 °C

- Mass of the water: $m=1g$

- Specific latent heat of vaporization of water: $\lambda_v=540 cal/g$

So, the heat needed is

$Q=(1)(540)=540 cal$

5 0

3 years ago

(NEED HELP ASAP) Which direction will the object move when forces are applied?

Ivahew [28]

Answer:

South

Explanation:

8 0

3 years ago

Read 2 more answers

An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.250 rev/s . The magnitude

Tems11 [23]

Answer:

ω = 0.436 rev/sec = 2.736 rad/sec

Explanation:

By definition, the angular acceleration is the rate of change of angular velocity, which is described by the following expression:

$\alpha = \frac{wf-wo}{t-to}$

Solving for ωf :

ωf = ω₀ + α*t (assuming t₀ = 0)

Replacing by givens in the problem, ω₀ = 0.250 rev/s, t =0.207 sec, and α = 0.896 rev/s², we have:

ωf = 0.250 rev/s +( (0.896 rev/s²)*(0.207 s)) = 0.436 rev/sec

Expressed in rad/sec:

ωf $= 0.436 rev/sec*2*\pi =2.736 rad/sec$

5 0

2 years ago