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Anvisha [2.4K]
3 years ago
6

Rob measures the solubility of three different salts in water at 22°C.

Physics
2 answers:
netineya [11]3 years ago
5 0
The correct answer for this question is this one: "B. line graph." Rob measures the solubility of three different salts in water at 22°C. The data can be best presented in a line graph.
Here are the following choices.
<span>A. bar graph
B. line graph
C. histogram
D. scatterplot</span>
Pani-rosa [81]3 years ago
3 0

The correct answer is "Bar Graph"

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A hot-air balloon is ascending at the rate of 12 m/s and is 80 m above the ground when a package is dropped over the side. (a) H
Debora [2.8K]

Answer:

Explanation:

Given

balloon is ascending at the rate of u=12\ m/s

Balloon is at a height of s=80\ m

As the package is dropped from the balloon it must possess the same initial velocity as the balloon

using

v^2-u^2=2as  

where v=final velocity

u=initial velocity

a=acceleration

s=displacement

v^2=12^2+2\times 9.8\times 80

v^2=1712

v=41.37\ m/s

time taken is  given by

v=u+at

substituting values

41.37=-12+9.8\times t

as we consider downward direction as positive

t=\frac{53.37}{9.8}

t=5.44\ s

therefore time taken to reach the bottom is t=5.44 s                                            

6 0
3 years ago
A toddler pushes his 7.0 kg toy box at a relatively constant velocity across the tiled floor of the family room applying a horiz
xxMikexx [17]

Answer:The coefficient of friction between the box and the floor,  = 1.456 × 10⁻²

Explanation:

8 0
2 years ago
A town is considering building a biodiesel power plant that would burn biomass to generate electricity. Which of the following c
garik1379 [7]

Answer:

i think its B

Explanation:

i found the answer on another website hope its the right answer :)

6 0
2 years ago
Read 2 more answers
A 1400 kg car is moving at 12 m/s when the driver stops a car what increase in the thermal energy of the car and it surroundings
butalik [34]
KE = 1/2 mv^2

in this case, the initial kinetic energy which is converted to heat is 

KE = 1/2 1400 (12)^2

KE = 100,800 J
5 0
3 years ago
Read 2 more answers
An electric field of 1.32 kV/m and a magnetic field of 0.516 T act on a moving electron to produce no net force. If the fields a
Lapatulllka [165]

Answer:

The speed of the electron is 2.55\times 10^3\ m/s.

Explanation:

Given that,

The magnitude of electric field, E=1.32\ kV/m=1.32\times 10^3\ V/m

The magnitude of magnetic field, B = 0.516 T

Both the magnetic and electric fields are acting on the moving electron. Then,  the magnitude of electric field and magnetic field is balanced such that :

evB=eE\\\\v=\dfrac{E}{B}\\\\v=\dfrac{1.32\times 10^3}{0.516}\\\\v=2558.13\ m/s

or

v=2.55\times 10^3\ m/s

So, the speed of the electron is 2.55\times 10^3\ m/s. Hence, this is the required solution.

3 0
3 years ago
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