Ask question

Ask question

All categories

3 years ago

13

Student A pushed on the cart with a force of 500 N. Student B pushed on the other side of the cart. The cart did not move. How m

uch force did student B apply? Explain how you know.

1 answer:

Nadusha1986 [10]3 years ago

5 0

I depends on the height of the other side of the cart. If it was lower, 400 N. If Higher, at least 600 N.

You might be interested in

What is the overall nuclear fusion reaction in the sun?

slamgirl [31]

The overall fusion reaction is the conversion of Hydrogen to Helium

8 0

3 years ago

What is the ph of 0.450 m al(no3)3 [ka for al3+(aq) = 1.00x10-5]? express your answer to two decimal places?

White raven [17]

Answer : The pH of the solution is, 2.67

Explanation :

The equilibrium chemical reaction is:

$Al^{3+}+H_2O\rightarrow Al(OH)^{2+}+H^+$

Initial conc. 0.450 0 0

At eqm. (0.450-x) x x

As we are given:

$K_a=1.00\times 10^{-5}$

The expression for equilibrium constant is:

$K_a=\frac{(x)\times (x)}{(0.450-x)}$

Now put all the given values in this expression, we get:

$1.00\times 10^{-5}=\frac{(x)\times (x)}{(0.450-x)}$

$x=0.00212M$

The concentration of $H^+$ = x = 0.00212 M

Now we have to calculate the pH of solution.

$pH=-\log [H^+]$

$pH=-\log (0.00212)$

$pH=2.67$

Therefore, the pH of the solution is, 2.67

8 0

3 years ago

13. According to Arrhenius definition which of the following is an acid *

VMariaS [17]

Answer: hcl

Explanation:

5 0

3 years ago

Where can you find a polar ice biome that contains pack ice and no soil?

ycow [4]

Answer:

APEX answer North Pole

Explanation:

6 0

3 years ago

Read 2 more answers

Choose all the answers that apply. Sound _____. travels in transverse waves requires a medium to travel through travels most slo

kari74 [83]

Answer: Option (a) is the correct option.

Explanation:

In order to travel, sound does need a medium. The more closer the particles of a medium, the better sound can travel through it. Therefore, in solids sound travels very quickly because in solids particles are closer to each other. As a result, they can easily transmit the energy from one particle to another.

Thus, it becomes easier for sound to travel through it. On the other hand, in solids sound can travel in both longitudinal and transverse waves.

Hence, out of the given options, sound travels in transverse waves requires a medium to travel through is the correct option.

3 0

3 years ago