1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ASHA 777 [7]
3 years ago
11

Three multiple choice science questions.

Physics
1 answer:
Ratling [72]3 years ago
6 0
C
A
B
I HOPE THIS HELPS
You might be interested in
As a laudably skeptical physics student, you want to test Coulomb's law. For this purpose, you set up a measurement in which a p
kherson [118]

Explanation:

The Coulomb's law states that the magnitude of each of the electric forces between two point-at-rest charges is directly proportional to the product of the magnitude of both charges and inversely proportional to the square of the distance that separates them:

F=\frac{kq_1q_2}{d^2}

In this case we have an electron (-e) and a proton (e), so:

F=-\frac{ke^2}{d^2}\\F=-\frac{8.99*10^9\frac{N\cdot m^2}{s^2}(1.6*10^{-19}C)^2}{(933*10^{-9}m)^2}\\F=-2.64*10^{-16}N

In this case, the electric force is negative, therefore, the force is repulsive and its magnitude is:

F=2.64*10^{-16}N

3 0
3 years ago
Which is an example of a physical change
mote1985 [20]
Water boiling is an example of a physical change. The rest are chemical changes.  
Hope that helps!!
6 0
3 years ago
a positively charged body makes contact with a body. after a while, the charged body becomes neutralised. state 3 main condition
MrRa [10]

Answer:

A body will become positively charged when some electrons will come out from the body.Thus, positive charge is due to deficiency of electrons.

5 0
2 years ago
Answer ?
morpeh [17]

Answer:

2.75 m/s^2

Explanation:

The airplane's acceleration on the runway was 2.75 m/s^2

We can find the acceleration by using the equation: a = (v-u)/t

where a is acceleration, v is final velocity, u is initial velocity, and t is time.

In this case, v is 71 m/s, u is 0 m/s, and t is 26.1 s Therefore: a = (71-0)/26.1

a = 2.75 m/s^2

5 0
2 years ago
Which metallloid has three valence electrons?
Naya [18.7K]
Boron Group
elements have three valence electrons and are fairly reactive. All of them are solids at room temperature. Boron is a very hard, black metalloid with a high melting point.
8 0
2 years ago
Other questions:
  • Research on the Big Five has indicated that approximately _____ percent of traits appear to be inherited.
    15·2 answers
  • Two runners start simultaneously from the same point on a circular 200-m track and run in the same direction. One runs at a cons
    14·1 answer
  • A 43-N crate is suspended from the left end of a plank. The plank weighs 21 N, but it is not uniform, so its center of gravity d
    11·1 answer
  • Predict the velocity vy when y=-3.5 meters. Use the average acceleration you calculated in Activity 1. Use the formula v = Vo2 +
    9·1 answer
  • 17. What are the two factors that can cause the volume of water in the ocean to change? A. Temperature and pressure B. Gravity a
    15·1 answer
  • A bungee cord with a spring constant of 800 stretches 6 meters at its greatest displacement. How much elastic potential energy d
    9·1 answer
  • The location of a particle is measured with an uncertainty of 0.15 nm. One tries to simultaneously measure the velocity of this
    13·1 answer
  • A triangular plate with base 4 m and height 5 m is submerged vertically in water so that the tip is even with the surface. Expre
    15·2 answers
  • Which is not a part of physical fitness?
    15·2 answers
  • ! ' 30 !! !
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!