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Anni [7]
3 years ago
13

Gravity can be described as

Physics
2 answers:
il63 [147K]3 years ago
8 0

Answer:

D

Explanation: gravity is the force responsible for anything that goes up come down it tends to attract substances to the center of the earth

Agata [3.3K]3 years ago
6 0
 I think it is B because gravity is <span>the field force of mutual attraction between any two masses, especially an object and the earth</span>
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You are designing a ski jump ramp for the next Winter Olympics. You need to calculate the vertical height (h) from the starting
Eddi Din [679]

Answer:

h = 50.49 m

Explanation:

Data provided:

Speed of skier, u = 2.0 m/s

Maximum safe speed of the skier, v = 30.0 m/s

Mass of the skier, m = 85.0

Total work = 4000 J

Height from the starting gate = h

Now, from the law of conservation of energy

Total energy at the gate = total energy at the time maximum speed is reached

\frac{1}{2}mu^2+mgh=4000J+\frac{1}{2}mv^2

where, g is the acceleration due to the gravity

on substituting the values, we get

\frac{1}{2}\times85\times2.0^2+85\times9.81\times h=4000J+\frac{1}{2}\times85\times30^2

or

170 + 833.85 × h = 4000 + 38250

or

h = 50.49 m

7 0
3 years ago
A standard 1 kilogram weight is a cylinder 54.0 mm in height and 55.0 mm in diameter. what is the density of the material
denis-greek [22]

The radius of the cylinder is equal to half the diameter:

r=\frac{d}{2}=\frac{55.0 mm}{2}=27.5 mm

The volume of the cylinder is given by:

V=\pi r^2 h=\pi (27.5 mm)^2 (54.0 mm)=1.28 \cdot 10^5 mm^3

where h is the heigth of the cylinder. Converting into meters,

V=1.28 \cdot 10^{-4} m^3

And the density of the material will be given by the ratio between the mass and the volume:

d=\frac{m}{V}=\frac{1 kg}{1.28 \cdot 10^{-4} m^3}=7812.5 kg/m^3

5 0
3 years ago
What type of planet is Venus?
mafiozo [28]
Venus would be an inner planet!
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7 0
3 years ago
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Answer:

ΔE = 9.7mJ

Explanation:

See attachment below.

7 0
3 years ago
Who published the first journal of experimental psychology?
raketka [301]

Answer:

Who published the first journal of experimental psychology?

American Psychological Association published the first journal of experimental psychology.

xXxAnimexXx

Happy labor day!

6 0
3 years ago
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