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Lapatulllka [165]
2 years ago
9

During an experiment, a scientist places a heat lamp above a bowl of water and uses the lamp to heat up the water. How does heat

transfer from the lamp to the water?
Conduction
Convection
Radiation
None of the above

sorry i dont know what subject to put
Physics
2 answers:
earnstyle [38]2 years ago
7 0
Radiation since its not directly in contact with it, it’s using it’s heat waves to warm it it
alexandr402 [8]2 years ago
6 0

Answer:

radiation

Explanation:

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a. more gravity

This is the answer.

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A lead ball has a mass of 55.0 grams and a density of 11.4 g/cm3. what is the volume of the ball?
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Density=mass/volume therefore volume=mass/density; 55g/11.4g/cm^3= 4.82cm^3
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0.22 L of pancake syrup has a mass of 33 g.
katrin2010 [14]

Answer:

a. 150 g/L

b. 75 g

c. 120 mL

Explanation:

a. 33g/0.22L=150 g/L

b. 33g/0.22L=150 g/L

150 g/L*0.5L=75g

c. 0.22L/33g=0.006667L/g

0.006667L/g*18g=0.12L

0.12L*1000=120mL

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2 years ago
Which type radiation can be observed well from Earth's surface?
umka2103 [35]

Answer:

Eletromagnetic radiation which is also known as visible light.

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4 0
3 years ago
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A gold wire that is 1.8 mm in diameter and 15 cm long carries a current of 260 mA. How many electrons per second pass a given cr
Musya8 [376]

Answer:

162500000.  

Explanation:

Given that

Diameter of the wire , d= 1.8 mm

The length of the wire ,L = 15 cm

Current ,I = 260 m A

The charge on the electron ,e= 1.6 x 10⁻¹⁹ C

We know that Current I is given as

I=\dfrac{q}{t}

I=Current

q=Charge

t=time

q= I t

q= 260 m t

The total number of electron = n

q= n e

n=\dfrac{260\times 10^{-3}\ t}{1.6\times 10^{-9}}

n=162500000 t

\dfrac{n}{t}=16250000

The number of electron passe per second will be 162500000.

4 0
3 years ago
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