A student heats 100 g of aluminum to 60°C. He places it in 100 g of water at 20°C. Over time, what will most likely happen?a. The water's temperature will increase slightly, and the metal's temperature will decrease a lot.

b. The water's temperature will increase a lot, and the metal's temperature will decrease slightly.

c. The water's temperature will decrease slightly, and the metal's temperature will increase a lot.

d. The water's temperature will increase by about the same amount as the metal's temperature decreases.

Answers

Answer 1

Answer: What is relevant here is that both water and metal have the same weight - if they had a different weight, one of them would change the temperature more than the other. (the one with more weight would change less).
But in the present case:

d. The water's temperature will increase by about the same amount as the metal's temperature decreases.

Answer 2

Answer:

Answer:

Option A

Step-by-step explanation:

Given : A student heats 100 g of aluminum to 60°C. He places it in 100 g of water at 20°C.

To find : Over time, what will most likely happen?

Solution :

We know,

Heat will flow out of the warm aluminum and into the cool water.

The final "equilibrium" temperature will be a little less than 40°C (the average of 60° and 20°), because the specific heat of the aluminum is about 8% less than the specific heat of the water.

So when some quantity of heat flows from the aluminum to the water, the temperature of the water rises a little less than the temperature of the aluminum falls.

Therefore, Option A is correct.

The water's temperature will increase slightly, and the metal's temperature will decrease a lot.

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A bicycle lock requires a two-digit code of numbers 1 through 9, and any digit may be used only once. Which expression would determine the probability that both digits are even?

Answers

The expression which would determine the probability that both digits are even which is required for bicycle lock is (4P1)(3P1)/(9P2).

What do you understand by the term permutation?

The permutation is the arrangement of the things or object in a systematic order, in all the possible ways. The order of arrangement in permutation is in linear.

A bicycle lock requires a two-digit code of numbers 1 through 9, and any digit may be used only once. The probability of choosing 2 digits from 9 is,

$^9P_2$

There are total 4 even numbers {2,4,6,8}. The probability of choosing first digit's even from 4 even numbers is,

$^4P_1$

For the second digit to be even is,

$^3P_1$

Thus, the favorable outcome is, $(^4P_1)(^3P_1)$ and total outcome is $^9P_2$ . Thus, the expression which would determine the probability that both digits are even is,

$P=((^4P_1)(^3P_1))/(^9P_2)$

Thus, the expression which would determine the probability that both digits are even which is required for bicycle lock is (4P1)(3P1)/(9P2).

Learn more about the permutations here;

brainly.com/question/12468032

#SPJ3

The correct answer is:

A. P(both even) = $((_(4)P_(1))(_(3)P_(1)))/(_(9)P_(2))$

The expression would determine the probability that both digits are even.

$|Huntrw6|$

On a line segment B is between AC and C is between B and D using the segment addition postulate if AB=7 AC=15 AD=32 what does BC BD and CD equal

Answers

Answer:

BC = 8

BD = 24

CD = 17

Step-by-step explanation:

First i found that I know AB is 7 and AC is 15 so i realize AB is part of AC so I subtract AB from AC for the difference and got the rest using the same logic

If you dont mind a thx 5 star and brainliest is greatly appreciated trying to hit next level and need 5 more brainliest

AB+AC=BC
7+15=BC
BC=22

AB+AD=BD
7+32=BD
BD=39

AC+AD=CD
15+32=CD
CD=47

There is a 70% chance that your car will get stuck in the snow during the next big snowfall. Given that you are already stuck in the snow with your car, the chance that you will require a tow truck to pull you out is 90%. What is the chance that you will get stuck in the snow with your car and will require a tow truck to pull you out?Hint: cap p left parenthesis cap a vertical line cap b right parenthesis equals start fraction cap p left parenthesis cap a intersection cap b right parenthesis over cap p left parenthesis cap b right parenthesis end fraction

29%
63%
78%
66%

Answers

Given:
Probability that your car will get stuck in the snow: 70%
Probability that you will require a tow truck when stuck in the snow is 90%.

Probability that you're stuck in the snow and need a tow truck.

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