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
mario62 [17]
3 years ago
5

Help me with number 28.

Physics
1 answer:
Ray Of Light [21]3 years ago
3 0
What you wrote in the space under the question is correct, but
you can go a lot farther than that.

The question gives you the mass of the object, and enough information
to calculate its volume. 

So go on from where you left off ... take the formula you wrote (correctly),
plug in the numbers for mass and volume, and find the density.  You can do it !
You might be interested in
If the mass of a portion is 1.67 x 10-27kg and the mass of an electron is 9.11 x 10-31kg, calculate the force of gravitation bet
emmainna [20.7K]

Answer:

1.38 into 10 power minus 58 Newton is the answer

7 0
3 years ago
a 1 m length of string is wrapped around a solid disk, of mass .25 kg and a radius of .30m, mounted on a frictionless axle. the
Nezavi [6.7K]

Answer:

60 rad/s

Explanation:

∑τ = Iα

Fr = Iα

For a solid disc, I = ½ mr².

Fr = ½ mr² α

α = 2F / (mr)

α = 2 (20 N) / (0.25 kg × 0.30 m)

α = 533.33 rad/s²

The arc length is 1 m, so the angle is:

s = rθ

1 m = 0.30 m θ

θ = 3.33 rad

Use constant acceleration equation to find ω.

ω² = ω₀² + 2αΔθ

ω² = (0 rad/s)² + 2 (533.33 rad/s²) (3.33 rad)

ω = 59.6 rad/s

Rounding to one significant figure, the angular velocity is 60 rad/s.

8 0
3 years ago
The tension in the horizontal towrope pulling a water-skier is 250 N while the skier moves due west a distance of 50 m. How much
icang [17]

Answer:

W = 250(50) = 12500 J

Explanation:

5 0
3 years ago
The elements from this section of the periodic table all belong to the same
Lady_Fox [76]

Answer:

The answer is:

B) period

3 0
3 years ago
Aerogenerators are used to produce electricity from
ki77a [65]
Like windmills they use the winds to generate their power.
4 0
3 years ago
Other questions:
  • The 630 nm light from a helium neon laser irradiates a grating. The light then falls on a screen where the first bright spot is
    9·1 answer
  • Light of wavelength 687 nm is incident on a single slit 0.75 mm wide. At what distance from the slit should a screen be placed i
    11·1 answer
  • assuming that there are no outside forces, what will happen if two neutral atoms are placed 1 M apart in a vacuum. a)the atoms w
    13·1 answer
  • What is the most precise method for recording data points during an experiment? A. plotting the data point on an X-Y graph B. cr
    14·2 answers
  • Why does stress build up at transform boundaries?
    6·1 answer
  • Two spectators at a soccer game in Montjuic Stadium see, and a moment later hear, the ball being kicked on the playing field. Th
    11·1 answer
  • As the result of a thermal inversion the prevailing air temperature profile increases 1°C/100m above the ground level. To what m
    8·1 answer
  • A submarine has a "crush depth" (that is, the depth at which
    13·1 answer
  • Write true if the statement is false change the underlined word to make the statement true. Write our answers on a separate shee
    11·2 answers
  • The oscillating electric field in a plane electromagnetic wave is given by <img src="https://tex.z-dn.net/?f=%7B50%5Csin%20%28%5
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!