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
djverab [1.8K]
3 years ago
15

Hypothetically speaking, if an object were located at the center of the Earth, the gravitational force on that object due to the

surrounding Earth, assuming matter is uniformly distributed, would have which of the following values?
a) The force would be approximately the same value as if the object were on the surface of the Earth.
b) The force would be much greater than the value if the object were on the surface of the Earth.
c) The force would be somewhat less than the value if the object was on the surface of the Earth, but it would be greater than zero newtons.
d) The force would be zero newtons.
Physics
1 answer:
Likurg_2 [28]3 years ago
5 0

Answer:

D. ) The force would be zero newtons

Explanation:

Because

If you are at the center of the earth, gravity is zero because all the mass around you is pulling "up" (every direction there is up!)

So F=mg so if g is zero F is also zero

You might be interested in
Microphones and loudspeakers are used in an auditorium because the sound waves at the stage compared to the sound waves at the b
MaRussiya [10]
Acoustics (sounds)
Hope the this helps!
6 0
3 years ago
Which equation best expresses the first law of thermodynamics, assuming Q is heat, U is internal energy, and W is work?
devlian [24]

The first law of thermodynamics is expresses by

D. ΔU=Q-W

which means change in internal energy of system = Heat added to system minus work done by the system

All are expressed in Joules.

This law is based on principle of conservation of energy.

5 0
3 years ago
Read 2 more answers
A train has a constant speed of 10 m/s around a track with a diameter of 45 m what is the centripal acceleration?
Bumek [7]

Answer:

a_{c}= 4.44\frac{m}{s}

Explanation:

When an object goes on a circular movement, it has a centripetal acceleration that always points toward the center of the circle, it is the responsible of the change of direction in the movement of the object. and that centripetal acceleration is related with the speed in the next way:

a_{c}=\frac{v^{2}}{r}, with v the speed, r the radius of the track that is half of the diameter (22.5 m)

a_{c}=\frac{10^{2}}{22.5}

a_{c}= 4.44\frac{m}{s}

5 0
3 years ago
The external cover of aeroplane is made up of aluminium instead of iron. Why?
Vlada [557]
The same volume of aluminum has a smaller mass than iron and aircrafts better be light.
3 0
3 years ago
Read 2 more answers
Consider an NACA 2412 airfoil with a 2-m chord in an airstream with a velocity of 50 m/s at standard sea level conditions. If th
Akimi4 [234]

Answer:

4°

Explanation:

Given,

chord in the airstream, c = 2 m

speed, v = 50 m/s

lift per unit span = 1353 N/m

density of air, ρ = 1.225 kg/m³

Lift,L = c_L \times \dfrac{1}{2} \rho v^2(c \times s)

\dfrac{L}{s}=c_L \times \dfrac{1}{2} \rho v^2\times c

50=c_L \times 0.5\times 1.225\times 50^2\times 2

c_L = 0.44

From the plot of c_L and angle of attack

Angle of attack is equal to 4°

8 0
3 years ago
Other questions:
  • Light of wavelength 623.0 nm is incident on a narrow slit. The diffraction pattern is viewed on a screen 76.5 cm from the slit.
    11·1 answer
  • The formula for speed is v = s/t. <br> a. True<br> b. False
    6·1 answer
  • In 1993 Ileana Salvador of Italy walked 3.0km in under 12min. Suppose that during her walk Salvador is observed to steadily incr
    10·1 answer
  • The periodic table shows metals, nonmetals, and noble gases. Which two elements will most likely form an ionic bond?
    9·2 answers
  • In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is appro
    9·1 answer
  • An object with a mass of 5.0 kg is accelerating toward the surface of Earth at a rate of 9.8 m/s^2
    10·1 answer
  • A 5 kg block moves in a straight line on a horizontal frictionless surface under the influence of a force that varies with posit
    14·1 answer
  • How is a coil of current carrying wire similar to a bar magnet
    5·1 answer
  • AYOO I NEED HELP plz
    15·2 answers
  • Would a phone, computer, and tablet work in space? Why?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!