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butalik [34]
3 years ago
8

Which of the answers shows three examples of a physical change

Physics
1 answer:
Wittaler [7]3 years ago
5 0
B would be the correct answer. All the other choices consist of physical changes
You might be interested in
Please help me I need this today
Mumz [18]

Answer:

42km/h

Explanation:

Change in km/ Change in time

1.4 x 100

0.033 x100

140km/3.3

= 42.4242 --> 42km/h

<u>Brainliest Appreciated!</u>

4 0
3 years ago
Helpp! If the box moves 12m to the right calculate the work done on the box.
Murrr4er [49]

Answer:

80 times 12=960

Explanation:

You have to do the equation for work, the equation is work= force times distance, the force here is 80newtons, the distance is 12meters, so you would do 80 times 12 to get your answer of 960

8 0
3 years ago
if a person can jump 2m in earth surface how high can he jump in the moon (g of moon = 1.66m/s, g of earth = 9.8 m/s) [hint: use
julia-pushkina [17]

Answer:

h_{moon} = 11.8\ m

Explanation:

Since the work done is same everywhere in the universe. Hence, the work done in jumping will be same for the person on moon and earth:

W_{moon} = W_{earth}\\\\P.E_{moon} = P.E_{earth}\\\\mg_{moon}h_{moon} = mg_{earth}h_{earth}\\\\g_{moon}h_{moon} = g_{earth}h_{earth}\\\\(1.66\ m/s^2)h_{moon} = (9.8\ m/s^2)(2\ m)\\\\h_{moon} = \frac{(9.8\ m/s^2)(2\ m)}{1.66\ m/s^2}\\\\h_{moon} =  11.8\ m

5 0
3 years ago
Find the x-component of this vector: 47.3 m 39.4 ° Remember, angles are measured from the + x axis. x-component (m)
Stells [14]
The answer to this question is 86.7
3 0
3 years ago
Read 2 more answers
What is the acceleration of a proton moving with a speed of 9.5 m/s at right angles to a magnetic field of 1.8 T
Elenna [48]

Explanation:

F = qvBsin(angle)

F = 1.6 x 10^-19 x 9.5 x 1.8 x Sin (90)

F = 273.6 x 10^-20N

a = F/M

M of a proton = 1.67 x 10^-27kg

a = 273.6 x 10^-20/1.67 x 10^-27

a = 1638323353.29m/s

4 0
3 years ago
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