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3 years ago

The greatest pull of a magnet is near its poles. True False

Physics

2 answers:

DIA [1.3K]3 years ago

6 0

False because opposites attract. :)

frosja888 [35]3 years ago

4 0

True, a magnet is equally as strong on the North as it is its South Pole

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A car speeds up from rest to +16 m/ s in 4s. calculate the acceleration

Pani-rosa [81]

The magnitude of acceleration is (change in speed) / (time for the change).

Change in speed = (speed at the end) - (speed at the beginning) =

(16 m/s) - (0) = 16 m/s .

Time for the change = 4 s .

Magnitude of acceleration = (16 m/s) / (4 s) = 4 m/s per sec = 4 m/s² .

6 0

3 years ago

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A concrete block is hung from an ideal spring that has a force constant of 100 N/m . The spring stretches 0.129 m .A- What is th

madam [21]

Answer:

1.31498 kg

0.72050 s

Explanation:

m = Mass of block

g = Acceleration due to gravity = 9.81 m/s²

k = Spring constant = 100 N/M

x = Displacement = 0.129 m

The force balance is

$mg=kx\\\Rightarrow m=\dfrac{kx}{g}\\\Rightarrow m=\dfrac{100\times 0.129}{9.81}\\\Rightarrow m=1.31498\ kg$

The mass of the block is 1.31498 kg

Time period is given by

$T=2\pi\sqrt{\dfrac{m}{k}}\\\Rightarrow T=2\pi\sqrt{\dfrac{1.31498}{100}}\\\Rightarrow T=0.72050\ s$

The period of oscillations is 0.72050 s

The time period does not depend on the acceleration due to gravity. It varies with the mass and the spring constant.

Hence, the time period would be the same

8 0

3 years ago

Is a burning wax candle nuclear energy?

sasho [114]

no because nuclear energy come from kinetic not potential energy. burning a wax candle is an example of heat/thermal energy .

6 0

3 years ago

How much is the velocity of a body when it travels 600m in 5 minutes?

maks197457 [2]

answer

so unit of velocity is m/s

displacement=600m

5minutes should be converted to seconds

5×60=300 seconds

so,

velocity= displacement÷time

= 600m ÷300s

=2m/s or 2ms^-1

4 0

2 years ago

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The bottom of cooking utensils are often kept black. Give reason

stepan [7]

Answer:

absorb more heat and get heated quickly

Explanation:

7 0

3 years ago