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Sonbull [250]
2 years ago
13

We can expect the force of friction to be greater for an object moving on a surface if the surfaces in contact are

Physics
1 answer:
nikitadnepr [17]2 years ago
8 0

Answer:

c

Explanation:

Friction is caused by how rough and object is, and how much the object weighs, as this causes it to drag more.

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A person carries a plank of wood 2 m long with one hand pushing down on it at one end with a force F1 and the other hand holding
sveta [45]

Answer:

F1= 588 N

F2= 784 N

Explanation:

Please see the attached file.

5 0
3 years ago
Which of the following is the best definition of energy?
Montano1993 [528]
Energy is the capacity to do some type of work
8 0
3 years ago
(true or false) electromagnetic energy is the kind created by horseshoe magnets
ozzi
The CORRECT answer would be false. They are different and so therefore the answer is false.

Hope this helped ‼️
6 0
3 years ago
A wave is traveling through a medium. As it travels, it displaces particles of matter in the same direction as the wave is trave
Alexxandr [17]

<u>Answer</u>

longitudinal wave because the particles move parallel to the direction that the wave is traveling.


<u>Explanation</u>

There are 2 types of a wave, electromagnetic and mechanical wave. These waves can also be categorized into two, longitudinal ans transverse waves.

longitudinal wave is a wave whose particles vibration is in the direction of wave travel.

Transverse wave is a wave whose vibration of particles is perpendicular to the direction of wave travel.

7 0
3 years ago
Read 2 more answers
What are the strength and direction of an electric field that will balance the weight of a 0.9 g plastic sphere that has been ch
Vladimir79 [104]
(a) The force exerted by the electric field on the plastic sphere is equal to
F=qE
where q=-3.4 nC=-3.4 \cdot 10^{-9} C is the charge of the sphere and E is the strength of the electric field. This force should balance the weight of the sphere:
F=mg =0.9 g
where m is the mass of the sphere and g is the gravitational acceleration.

Since the two forces must be equal, we have:
qE=mg
and so we find the intensity of the electric field
E= \frac{mg}{q}= \frac{0.9 \cdot 9.81 m/s^2}{3.4 \cdot 10^{-9} C} =2.6 \cdot 10^9 N/C

(b) Now let's find the direction of the field. The electric force must balance the weight of the sphere, which is directed downward, so the electric force should be directed upward. Since the charge is negative, the force is opposite to the electric field direction, and so the direction of the electric field is downward.
4 0
3 years ago
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