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
nlexa [21]
3 years ago
8

When a cup is placed on a table, which force prevents the cup from falling to the ground? A. gravitational force B. normal force

C. resistance force D. tension force
Physics
2 answers:
stealth61 [152]3 years ago
6 0

its B... normal force


meriva3 years ago
6 0

Answer:

here normal force will balance the weight of cup which will prevent it from falling

B. normal force

Explanation:

When cup is placed on the table then there will be two forces on the cup

1). Normal force due to table which will be perpendicular to the table and acting upwards

2). gravitational force or weight of the cup which acts perpendicular downwards

now since the cup is at rest so net force on the cup must be balanced

so we can say

F_g - F_n = 0

so here we will have

mg - F_n = 0

so here normal force will balance the weight of cup which will prevent it from falling

You might be interested in
If one wave of 10 m amplitude meets constructively with another of amplitude 20
steposvetlana [31]

Answer:

B. 30m

Explanation:

This is because when a wave interferes constructively with another wave, they will add since constructive relates to joining or building up.

So, 10m + 20m equals a 30m wave.

3 0
4 years ago
How are gamma rays and microwaves similar
kompoz [17]

They are both electromagnetic waves

Explanation:

Electromagnetic waves are waves consisting of periodic oscillations of electric and magnetic fields. The fields oscillate in a plane perpendicular to the direction of motion the wave, so they are transverse waves.

Electromagnetic waves are the only type of waves able to travel in a vacuum. All electromagnetic waves travel in a vacuum at the same speed, known as the speed of light, equal to:

c=3.0\cdot 10^8 m/s

Electromagnetic waves are divided into 7 different types, depending on their wavelength and frequency. From the shortest to the longest wavelength (and so, from highest to lowest frequency, since frequency is inversely proportional to wavelength), we have:

Gamma rays

X rays

Ultraviolet

Visible light

Infrared radiation

Microwaves

Radio waves

So as we can see, both gamma rays and microwaves are types of electromagnetic waves. The difference between them is their different wavelength/frequency: in fact, the wavelength of gamma rays is extremently short (), while microwaves have longer wavelengths (at the order of the centimeter).

Learn more about electromagnetic waves:

brainly.com/question/9184100

brainly.com/question/12450147

#LearnwithBrainly

7 0
4 years ago
Do you think that solids can undergo convection
Alex_Xolod [135]
<span>Convection means the movement happens inside a fluid by the cause of too much heat and lesser density to rise, and also the colder cause denser materials to sink.
Thus, Solid cannot undergo convection because the molecules inside the solid are closer and can hardly move unlike liquid.
So, when the temperature got hotter or colder, the molecules on solid will only vibrate and not convert.
Therefore, this concludes that the solid do not undergo convection rather conduction of heat.</span>



7 0
4 years ago
Round 61.062 to one decimal place.​
RoseWind [281]

Answer: 61.1 is the answer I wish this answer help you.

3 0
4 years ago
How much energy is required to change a 39.0-g ice cube from ice at -14.0°c to steam at 108°c?
Ann [662]
Heat is added to the mass as follows:
Q_-14-0 = mC_iΔT = 39*2.06*(0--14) = 39*2.06*14 = 1124.76 J
Q_0 = mC_f = 39*334 = 13026 J
Q_0-100 = mC_wΔT = 39*4.18*100 = 16302 J
Q_100 = mC_v = 39*2230 = 86970 J
Q_100-108 = mC_sΔT = 39*2.03*(108-100) = 39*2.03*8  = 633.36J

Q = Summation of all the heats added = 1124.76+13026+16302+86970+633.36 = 118056.12 J ≈ 118.06 kJ
7 0
3 years ago
Other questions:
  • What condition must be met when writing a formula for an ionic compound
    11·1 answer
  • Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 64.7 N, Jill pulls with 61.5 N in the
    6·1 answer
  • If a rock has a mass of 0.15 kg on the moon what will its mass be on earth
    13·1 answer
  • How do you label <br> Time= energy • power
    8·1 answer
  • g Warm water in a geothermal heating system enters the pipe of a radiator at 20 psia and 119oF with a flow rate of 235 cfm (ft3/
    14·1 answer
  • . According to Piaget’s stages of cognitive development, the child does not differentiate between self and other objects. The ch
    5·2 answers
  • An object is fired from the ground at 100. m/s at an angle of 30° with the horizontal.
    12·1 answer
  • What is the mass of a baseball that has a kinetic energy of 105 J and is traveling at 10 m/s?​
    6·1 answer
  • A body on a 20m high cli drops a stone. One second later, he throws
    13·1 answer
  • Compare the two numbers using &lt;, &gt;, =
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!