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Gekata [30.6K]
3 years ago
6

How to determine whether the object is magnetic.

Physics
2 answers:
o-na [289]3 years ago
7 0

Answer:

By holding another magnet close to it. If the object is attracted to the magnet, then it too is magnetic.

MariettaO [177]3 years ago
7 0
Based on weather or not it sticks to a magnet
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A Fleas can jump up a distance as large as 33 cm horizontally in a single leap (they are only 0.3 mm in size!). What is their la
Alex Ar [27]

Answer:

Launch velocity of the fleas = 1.80 m/s

Explanation:

Optimal launch angle is the angle that guarantees the maximum horizontal distance covered.

Optimum launch angle = 45°

The horizontal distance covered by a projectile is given as Range

R = (u² sin 2θ)/g

u = initial velocity of the projectile (flea) = ?

R = range = 33 cm = 0.33 m

θ = 45°

2θ = 2 × 45° = 90°

Sin 90° = 1

g = acceleration due to gravity = 9.8 m/s²

R = (u²/g)

u² = Rg = 0.33 × 9.8 = 3.234

u = 1.80 m/s

Hope this helps!!!

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3 years ago
If you push a box across the floor, the box experiences what kind of friction?
Talja [164]
I think it is kinetic friction not the best at physics
4 0
3 years ago
Read 2 more answers
A box is pushed horizontally with constant speed across a rough horizontal surface. Which of the following must be true?
Pavel [41]
D

Because if an object is moving at a constant speed the force of friction must equal the applied (horizontal) force, and for it to be accelerating or decelerating, the force of friction and the applied force must be unequal
5 0
3 years ago
A ball is lodged in a hole in the floor near the outside edge of a merry-go-round that is turning at constant speed. Which kinem
dybincka [34]

Answer:

Explanation:

It is given that the ball is lodged in a hole in the floor of merry-go-round that is running at a constant speed.

Now the ball is moving a vertical circular motion  

The position of the ball changes w.r.t to the center as it moves in a circular path i.e. vectorially it changes but its magnitude will remain the same.  

The velocity of the ball is the same as merry-go-round so its magnitude remains the same but its direction will change continuously.

As the ball is moving in a circular path so a centripetal acceleration will acts towards the center so its value will be continuously changing.

3 0
3 years ago
Which unit of speed will you use to express the speed of the following. 1. Aeroplane. 2.tortoise. 3.ant 4.horse​
Naya [18.7K]

Aeroplane- m/s

Horse-km/h

Ant=m/h

Tortoise=m/h

Hope this helps!

8 0
3 years ago
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