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EleoNora [17]
3 years ago
11

A 100-g piece of metal initially at T = 75C is submerged in 100 g of water initially at T = 25C. The specific heat capacity of i

ron is 0.45 J g-1 °C-1 and the specific heat capacity of water is 4.18 J g-1 °C-1. What is the final temperature of both substances in C?
a. 100
b. 75
c. 65
d. 30
e. 25
Chemistry
1 answer:
san4es73 [151]3 years ago
6 0
I’m not so sure but I think it’s b
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A 21.0 kg child is running at a velocity of 2.50 m/s. The child is carrying a 2.25 kg gallon of milk. What is the momentum of th
KIM [24]

Answer: The momentum of the child and milk together is 58.125 kg.m/s

Explanation:

Momentum is defined as the product of object's mass and velocity.

Mathematically,

p=mv

where, p = momentum

m = mass of the object

v = velocity of the object

In the given question, we are given that a child of mass 21.0 kg is carrying a gallon of milk having mass 2.25 kg and running with a velocity of 2.5 m/s. Hence, the momentum by both milk and child will be:

p=(m_{child}+m_{milk})v     ....(1)

Given:

m_{child}=21.0kg\\m_{milk}=2.25kg\\v=2.5m/s\\p=?kg.m/s

Putting values in equation 1, we get:

p=(21+2.25)kg\times 2.5m/s=58.125kg.m/s

Hence, the momentum of the child and milk together is 58.125 kg.m/s

7 0
3 years ago
What is the forward rate with continuous compounding for a three-month period starting in one year?
Tamiku [17]

Answer:8.7%

Explanation:

5 0
1 year ago
Which of the following will allow measurement of a liquids volume with the greatest precision ?​
Evgesh-ka [11]
I personally think that it’s C.
(i’m sorry if it’s wrong)
6 0
2 years ago
Read 2 more answers
Compare the wavelength and energy of ultraviolet rays to visible light
Nadusha1986 [10]

Answer:

Visible wavelengths range from 0.0007 milimeters for red light, through orange, yellow, green, and blue, to 0.0004 milimeters for violet light.

Ultraviolet is shorter wavelengths than violet.

Hope This Helps.

6 0
3 years ago
Which of the following is equal to 3.3mm3? A) 3.3 x 10^-6 m^3 B) 3.3 x 10^-9 m^3 C) 3.3 x 10^-6 cm^3 D) 3.3 x 10^-9 cm^3
vazorg [7]
Step 1 - Since 3.3mm^3 = 0.0033cm^3, convert that to 3.3x10^-3 cm^3.

Step 2 - Since 1cm^3 = 1x10^-6 m^3, times 3.3 by that. (3.3 x 1 x 10^-6) = 0.0000033

Step 3 - 0.0000033 = 3.3 x 10 ^-6 m^3, which is your answer choice A.

*if you do not understand, message me and I will go through it more thoroughly!!*

Have a great day!! :)
3 0
3 years ago
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