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4 years ago

1. Solve: When you mix two substances, the heat gained by one substance is equal to the heat

Physics

1 answer:

hram777 [196]4 years ago

5 0

Answer:

So heat required to raise the temperature of water is given as Q = 33472 J

Explanation:

As we know that the temperature of water is increased by 2 Degree C

So here we have heat gain by the water is given by the equation

$Q = m s\Delta T$

Now we know that

m = 1000 g

s = 4.184 J/g C

Now plug in all data in above equation

$Q = 1000(4.184)(2)$

$Q = 33472 J$

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A rock is thrown vertically upward from some height above the ground. It rises to some maximum height and falls back to the grou

True [87]

Answer:

At the highest point the velocity is zero, the acceleration is directed downward.

Explanation:

This is a free-fall problem, in the case of something being thrown or dropped, the acceleration is equal to -gravity, so -9.80m/s^2. So, the acceleration is never 0 here.

I attached an image from my lecture today, I find it to be helpful. You can see that because of gravity the acceleration is pulled downwards.

At the highest point the velocity is 0, but it's changing direction and that's why there's still an acceleration there.

6 0

3 years ago

andreev551 [17]

For a 166-lb person, a dose of 452 milligrams is prescribed to treat asthma.

<h3>How would you define asthma?</h3>

Lung damage is a side effect of asthma. Repeated episodes of coughing, dyspnea, chest tightness, and wheezing are also brought on by it. By taking medication and avoiding the triggers that can set off an attack, asthma can be managed. Outdoor allergens, such as pollen from grass, trees, and weeds, are common asthma triggers. Different allergens and irritants might function as triggers for different people. Dust mites, cockroaches, mold, and pet dander are examples of indoor allergies. Air irritants like smoke, chemical fumes, and powerful scents.

Mass = 166 lb×(453.59 g/1 lb)×(1kg/1000g)=75.30 kg

Dose = 75.30 kg ×(6.00 mg/1 kg)=452 mg

Elixophyllin has a 452 mg dose for a 166 lb person with asthma.

To know more about asthma, click here:

brainly.com/question/5009040

#SPJ4

8 0

2 years ago

A 70kg man runs at a pace of 4 m/s and a 50g meteor travels at 2 km/s. Which has the most kinetic energy?.

kirill115 [55]

Answer:

the 70kg man

Explanation:

because he has more weight and is moving faster

4 0

3 years ago

2) How much work is required to pull a sled 15<br> meters if you use 30N of force?

geniusboy [140]

2 people

Explanation:

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3 years ago

How can you predict the action of the element

patriot [66]

Stark contrast to paths on energy surfaces or even mechanistic reactions, rule-based and inductive computational approaches to reaction prediction mostly consider only overall transformations. Overall transformations are general molecular graph rearrangements reflecting only the net change of several successive mechanistic reactions. For example, Figure 1 shows the overall transformation of an alkene interacting with hydrobromic acid to yield the alkyl bromide along with the two elementary reactions which compose the transformation.

8 0

3 years ago