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3 years ago

13

In a walking investigation, Josephine

1 answer:

Ber [7]3 years ago

5 0

Explanation:

She walked 20 feet in the first 25 seconds. Then she stayed at the 20 foot position for 5 seconds. Then she walked another 20 feet in 25 seconds. See attached graph.

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What can be found in every skeletal muscle?

Crazy boy [7]

Answer:

Its C

<u>Thank</u><u> </u><u>me</u><u> </u><u>later</u><u> </u>

<u>Now</u><u> </u><u>bye</u><u> </u>

7 0

3 years ago

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A 10- kg ball starting from rest rolls down a 5 m tall smooth hill from one person to another person who is standing at the bott

olya-2409 [2.1K]

Answer: 3.13 m

Explanation:

Given

mas of the ball is m=10 kg

The ball rolls down a vertical distance of 5 m

Spring constant of spring is $k=100\ N/m$

Here, the potential energy of the ball converted into kinetic energy which in turn converts into elastic potential energy

$\Rightarrow mgh=\frac{1}{2}kx^2\quad [\text{x=compression in the spring}]\\\\\Rightarrow 10\times 9.8\times 5=\frac{1}{2}\cdot 100\cdot x^2\\\Rightarrow x=\sqrt{9.8}\\\Rightarrow x=3.13\ m$

Thus, the spring compresses by 3.13 m.

6 0

3 years ago

What if the store decided to arrange their items according to size, color or shape? What do you think will happen to your shoppi

Y_Kistochka [10]

Answer: it will change dramatically

Explanation:

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3 years ago

Gold has a specific heat of 0.130 J/g*C. If 195 joules of heat are added to 15 grams of gold how much does the temperature of th

Anna71 [15]

The correct answer to the question is : $100\ ^0C$

EXPLANATION :

As per the question, the specific heat of gold is given as c = $0.130\ J/g^0C$

The heat given to the gold dQ = 195 J

The mass of the gold is given as m = 15 gram.

We are asked to calculate the change in temperature.

Let the change in temperature is dT.

We know that dQ = mcdT

$dT=\ \frac{dQ}{mc}$

$=\ \frac{195}{15\times 0.130}$

$=\ 100\ ^0C$ [ANS]

Hence, the change in temperature is 100 degree celsius.

5 0

4 years ago

Value of x<br>Guys plz answer <br>and get marked as brainliest :)

lakkis [162]

Answer:

80⁰

Explanation:

triangle AOB = 180

So, a = 50

triangle CAB = a+a+x=180

CAB = 50+50+X=180

CAB = X = 180-100

X=80

HOPE IT HELPS

3 0

3 years ago

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