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3 years ago

Am i pertty and who do think is going to win the presidential election who do u want to win and why

Physics

2 answers:

rodikova [14]3 years ago

8 0

Honestly it doesn’t matter to me

slamgirl [31]3 years ago

6 0

Answer: i think biden will win

Explanation:

because people throw away donald trump's votes

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An object in motion will remain in motion and an object at rest will remain at rest until a greater force interrupts it. Explain

Fittoniya [83]

Answer:

A object, lets say a cup. This cup will never, ever move unless something or someone disturbs it. If something touches or hits this cup the cup will move. But, until the cup gets touched, nothing will EVER make it move.

Explanation:

<em>I hope this helps!!</em>

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3 years ago

How many milliliters of water at 25.0°C with a density of 0.997 g/mL must be mixed with 162 mL of coffee at 94.6°C so that the r

Andre45 [30]

Answer:

The volume of water is 139 mL.

Explanation:

Due to the Law of conservation of energy, the heat lost by coffee is equal to the heat gained by the water, that is, the sum of heats is equal to zero.

$Q_{coffee} + Q_{water} = 0\\Q_{coffee} = - Q_{water}$

The heat (Q) can be calculated using the following expression:

$Q=c \times m \times \Delta T$

where,

c is the specific heat of each substance

m is the mass of each substance

ΔT is the difference in temperature for each substance

The mass of coffee is:

$162mL.\frac{0.997g}{mL} = 162g$

Then,

$Q_{coffee} = - Q_{water}\\c_{c} \times m_{c} \times \Delta T_{c} = -c_{w} \times m_{w} \times \Delta T_{w}\\m_{c} \times \Delta T_{c} = -m_{w} \times \Delta T_{w}\\m_{w} = \frac{m_{c} \times \Delta T_{c}}{-\Delta T_{w}} \\m_{w}=\frac{162g \times (62.5 \°C - 94.6 \°C ) }{-(62.5 \°C - 25.0 \°C)} \\m_{w} = 139 g$

The volume of water is:

$139g.\frac{1mL}{0.997g} =139mL$

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4 years ago

The function of the ___________________ system is to keep the human species on this planet.

Talja [164]

The function of the "Reproductive" <span>system is to keep the human species on this planet.

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4 years ago

Scientists might make a computer model of volcanic eruptions. What is the

Anna [14]

Answer:

Computer Model May Help to More Accurately Predict Volcano Eruptions. Scientists at the GFZ German Research Center in Potsdam, Germany, have developed a computer model which they say boosts the accuracy of volcanic eruption prediction.

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1 year ago

What type of friction is using chalk in the summer to draw on the ground in Copley square?

Lera25 [3.4K]

The second option rolling friction

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3 years ago