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KonstantinChe [14]
3 years ago
10

At which location could you place the north pole of a bar magnet so that it would be pushed away from the magnet shown?

Physics
2 answers:
Gala2k [10]3 years ago
7 0
It’s a because b makes more since shown as the magnet
skelet666 [1.2K]3 years ago
4 0

Answer:

The answer is C (A)

Explanation:

I just did it on Apex

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What force must act on a 50.0-kg mass to give it an ancceleration of 0.30 m/s^2?
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Answer:

15.0 N

Explanation:

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2 years ago
If Sarah melts 10g of tin. What mass of melted tin would she have at the end of the experiment?​
Nastasia [14]

Answer:

10g

Explanation:

As the Law of Conservation of Mass states that " Mass can neither be created nor be destroyed in a chemical reaction".

Though melting of tin isn't a chemical change, the same logic is applied here...

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3 years ago
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A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity ofthe ball the instant befo
Sergeeva-Olga [200]

Answer: The velocity of the ball is 30.0 m/s

This can be calculated by using the value of acceleration as 10.0 m/s2 in free fall and the given time of 3.0 seconds. To get the velocity, one will have to multiply the acceleration with the given time and the quotient would result to 30.0 m/s. Mostly all object regardless of their mass, fall to earth with the same acceleration in the absence of air resistance and as the child drops the ball from a window, it gains speed as it falls.

5 0
3 years ago
1. A student is biking to school. She travels 0.7 km north, then realizes something has fallen out of her bag.
Snezhnost [94]

Explanation:

(a) Displacement of an object is the shortest path covered by it.

In this problem, a student is biking to school. She travels 0.7 km north, then realizes something has fallen out of her bag.  She travels 0.3 km south to retrieve her item. She then travels 0.4 mi north to arrive at school.

0.4 miles = 0.64 km

displacement = 0.7-0.3+0.64 = 1.04 km

(b) Average velocity = total displacement/total time

t = 15 min = 0.25 hour

v=\dfrac{1.04\ km}{0.25\ h}\\\\v=4.16\ km/h

Hence, this is the required solution.

8 0
3 years ago
A driver's foot presses with a steady force of 20N on a pedal in a car as shown.
azamat

Answer:

160N

Explanation:

Moments must be conserved - so.

20 * 0.4 = F * 0.05

F=\frac{20*0.4}{0.05} = 160

6 0
3 years ago
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