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2 years ago

15

Help me, 100 points to answer right, answer without context will be reported

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dlinn [17]2 years ago

7 0

734 is the answer for the chronic blood exchange service of new france

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Explain why the roller coaster’s potential energy is greater at point 1 than at point 4.

lesya692 [45]

Point 1 is PROBABLY higher up than point 4.

Another possibility is that on the way from Point 1 to point 4,
a lot of people are falling out of the coaster.

We have no way to tell, because you neglected to show us
the picture that goes with this question. It's important.

5 0

3 years ago

Read 2 more answers

50-g of hot water at 65 degree C is poured into a cavity in a very large block of ice at 0 degrees C. The final temperature of t

Mariulka [41]

Answer:

m = 40.88 g

Explanation:

Given data:

We know that Ice at zero degree celcius convert into liquid form by observing heat

latent heat of fusion = 79.5 cal/g

heat required or relaesed to convert 50 gram of water at 65 degree c to zero degree celcius

let mass of ice is m

$50 \times\ (1 cal/g) \times (65-0) = m(79.5) cal/g$

where 1 cal/g os specific heat of water

solving for m

$m = \frac{50\times 65}{79.5} g$

m = 40.88 g

6 0

3 years ago

A camera flash, which throws a parallel beam of light, has a mirror behind the light bulb. What kind of mirror is it likely to b

WINSTONCH [101]

For Plato, the correct answer is Concave mirror :)

3 0

3 years ago

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A stream of warm water is produced in a steady-flow mixing process by combining 1.0 kg/s of cool water at 25 °C with 0.8 kg/s of

Tamiku [17]

Explanation:

The given data is as follows.

$m_{1}$ = 0.8 kg/s = 800 g, $C_{1} = 4.18 J/g^{o}C$

$m_{2}$ = 1 kg = 1000 g, $T_{1}$ = (75 - T),

$T_{2}$ = T - 25

Now, according to the law of conservation of energy,

$m_{1}C_{1}T_{1} = m_{2}C_{2}T_{2} + mL$

$800 \times 4.18 \times (75 - T) = 1000 \times 4.18 \times (T - 25)$ + 30000

250.8 - 3.34T = 4.18T - 104.5 + 30

T = $\frac{325.3}{7.52}$

= $43.23^{o}C$

Thus, we can conclude that temperature of the warm water stream is $43.23^{o}C$ .

4 0

2 years ago

A car traveling on a straight road at 10 meters per second accelerates uniformly to a speed of 21 meters per second in 12 second

labwork [276]

21+10=31 because you can see that 21 and 10 are in metres while 12 is in seconds so 21+10=31 is the answer.

6 0

2 years ago