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3 years ago

A population of deer is defined by:

Physics

2 answers:

Nastasia [14]3 years ago

5 0

Answer:

the last one is false

Explanation:

got it right

nika2105 [10]3 years ago

4 0

1. A
2.B
3. True
4. False
5.B
6.B
7.B
8.True
9 true
10 true
11 true
12 C
13 D
15true

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What does your ecological foot print tell you?

shepuryov [24]

Answer:

How big your foot is. (Big Brain)

Explanation:

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4 years ago

Which characteristic must a food have to receive a “natural” label from the FDA ?

adelina 88 [10]

No artificial ingredients
i only know that because my mom was vegan for two years

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4 years ago

Newton’s law of universal gravitation.. . a.. is equivalent to Kepler’s first law of planetary motion.. b.. can be used to deriv

mixer [17]

By the help of newtons law of gravitation we can derive keplers third law of planetary motion.

8 0

3 years ago

Read 2 more answers

In an insulated container, 0.50 kg of water at 80°C is mixed with 0.050 kg of ice at −5.0°C. After a while, all the ice melts, l

Phoenix [80]

Explanation:

When ice tends to absorb heat energy then it will change into liquid state. Now, change in the temperature of cold water $dT = T_{f} - 0^{o}C$ = $T_{f}$

Change in the temperature of original water in the container $dT' = 80 -T_{f
}$

Latent heat of melting of ice L = 80 cal/g

Specific heat of water C = 1 cal/g C

Heat absorbed by ice to melt = mass( $m_{i}$ ) x latent heat(L)

Heat absorbed by water = mass( $m_{w}$ ) x specific heat(C) x change in temperature (dT')

$m_{i}$ = 0.050 kg = 50 g and $m_{w}$ = 0.50 kg = 500 g

Now, heat lost by water is as follows.

heat lost by hot water( at $80^{o}C$ ) = heat absorbed by the ice + heat absorbed by cold water

$m_{i} \times L + m_{i} \times C dT = m_{w} \times C dT'$

$50 \times 80 + 50 \times 1 \times (T_{f}) = 500 \times 1 \times (80 - T_{f})$

So, we will cancel out 50 from each term given above. Hence,

$80 + T_{f} = 800 - 10T_{f}$

$11 T_{f}$ = 720

$T_{f} = 65.45^{o}C$

Thus, we can conclude that final temperature of the water is $65.45^{o}C$ .

6 0

3 years ago

Read 2 more answers

A person is standing on a spring bathroom scale on the floor of an elevator which is moving up and slowing down at the rate of 3

aleksklad [387]

Answer:

$F_N=1194.24\ N$

Explanation:

Given that,

The elevator is moving up and slowing down at the rate of, $a=3\ m/s^2$

The acceleration due to gravity, $g=9.8\ m/s^2$

Mass of the person, m = 93.3 kg

To find,

The reading of the scale.

Solution,

As the elevator is moving down with some acceleration. The net force acting on it is given by :

$F_N=ma+mg$

$F_N=m(a+g)$

$F_N=93.3(3+9.8)$

$F_N=1194.24\ N$

So, the scale will read 1194.24 N.

3 0

4 years ago