3 years ago

Can anyone help me plz

Physics

2 answers:

scoray [572]3 years ago

6 0

Answer:

B and A

Explanation:

Alenkinab [10]3 years ago

5 0

B & A

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La masa de un camión es de

Nutka1998 [239]

Answer:

45000 kg and 45 tons

Explanation:

The expression in kilograms and tons is shown below;

As we know that

1 gr is 0.001 kg

So, 45000000 = 45,000 kg

And,

1 kg = 0.001 tons

So, 45000 kg = 45 tons

Therefore the same would be considered

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3 years ago

Name 2 things that have gears in them

Anvisha [2.4K]

BICYCLE

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THEY ARE THE VEHICLES WHICH HAS GEARS IN THEM.

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4 years ago

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sukhopar [10]

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What is an example of an electromagnetic wave? Select all that apply. *

Afina-wow [57]

Answer:

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Explanation:

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3 years ago

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An engine does 10 J of work and exhausts 25 J of waste heat during each cycle.

noname [10]

The thermal efficiency is defined as follows

$\eta = 1 - \frac{Q_{\text{out}}}{Q_\text{in}}$ ,

and the energy which is put into the system is

$Q_{\text{in}} = W_\text{out} + Q_\text{out}$ .

In your case $Q_\text{in} = 25 \text{ J},W_\text{out}=10 \text{ J}.$

So $Q_\text{out}=10 \text{ J}$ which gives an efficiency of

$\eta = 1 - \frac{10 \text{ J}}{25 \text { J}} = 0.6 = 60 \%$ .

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3 years ago