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
prisoha [69]
3 years ago
12

The weight of spaceman Speff at the surface of planet X, solely due to its gravitational pull, is 389 N. If he moves to a distan

ce of 1.86 × 104 km above the planet's surface, his weight changes to 24.31 N. What is the mass of planet X, if Speff's mass is 75.0 kg? (G = 6.67 × 10 -11 N ∙ m2/kg2)
Physics
1 answer:
miv72 [106K]3 years ago
8 0

Answer:

mass of the planet X = 5.6 × 10²³ kg.

Explanation:

According to Newtons law of universal gravitation,

F = GM₁M₂/r²

Where F = gravitational force, M₁ = mass of the speff, M₂ = mass of the planet X, G = gravitational constant r = distance between the speff and the planet X

making M₂ The subject of the equation above,

M₂ = Fr²/GM₁ .......................... equation 2

Where F = 24.31 N, r = 1.08×18⁴km ⇒( convert to m ) =1.08 × 10⁴  × 1000 m

r = 1.08  × 10⁷ m, G = 6.67  × 10 ⁻¹¹ Nm²/kg², M₁ = 75 kg

Substituting this values in equation 2,

M₂ = 24.13(1.08  × 10⁷ )²/75( 6.67  × 10 ⁻¹¹)

M₂ = 24.13 × 1.17 × 10¹⁴/500.25 × 10⁻¹¹

M₂ = (28.23 × 10¹⁴)/(500.25 × 10⁻¹¹)

M₂ = 0.056 × 10²⁵

M₂ = 5.6 × 10²³ kg.

Therefore mass of the planet X = 5.6 × 10²³ kg.

You might be interested in
Which of the following is best described as a synthesis reaction? (2 points) 2HgO → 2Hg + O2 AgNO3 + NaCl → AgCl + NaNO3 HCl + N
Shtirlitz [24]

2Na + Cl₂ → 2NaCl

Explanation:

The reaction of sodium metal with chlorine gas to produce sodium chloride is a typical example of synthesis reaction.

Combination or synthesis involves the formation of a single product from two or more reactants.

    A + B ⇒ C

  In this kind of chemical reaction, a single product is formed or some compounds by the union of elements is notable.

The driving force for this category of chemical reaction is the large and negative heat of formation of the product.

learn more:

Chemical reaction brainly.com/question/3953793

#learnwithBrainly

3 0
3 years ago
Read 2 more answers
If someone drops a cup, it falls to the ground. Why doesn't the gravitational force between the person's hand and the cup keep t
Genrish500 [490]

Answer:

The gravity from the person's hand is weaker than the gravity from the pull of the earth

Explanation:

The gravity from the person's hand is weaker than the gravity from the pull of the earth

5 0
3 years ago
What would we do if we didn't have solar energy?
Anvisha [2.4K]

We would have to use wind or another source

8 0
3 years ago
Read 2 more answers
1. A base-ball of mass 0.3kg approaches the bat at a speed of 30 miles/hour and when the ball hits the bat for 0.5 s, it started
andre [41]

Answer:

I = 27kg.mi/h

Explanation:

In order to calculate the impulse of the ball, you use the following formula:

I=m\Delta v  =m(v-v_o)      (1)

m: mass of the ball = 0.3kg

v: speed of the ball after the bat hit it = 60mi/h

vo: speed of the ball before the bat hit it = 30mi/h

You replace the values of all parameters in the equation (1):

I=(0.3kg)(60mi/h-(-30mi/h))=27kg\frac{mi}{h}

where the minus sign of the initial velocity means that the motion of the ball is opposite to the final direction of such a motion.

The imulpse of the ball is 27 kg.miles/hour

5 0
3 years ago
What is the genotype for a woman with no freckles?
SIZIF [17.4K]
Well are having freckles recessive or dominant?
6 0
3 years ago
Read 2 more answers
Other questions:
  • The engine on a fighter airplane can exert a force of 105,840 N (24,000 pounds). The take-off mass of the plane is 16,875 kg. (I
    8·1 answer
  • PLS HELP ASAP!!!
    11·2 answers
  • 162 x [ 6 ( 7 x 4²) ]<br><br> I got 108,864, Is this correct?
    12·1 answer
  • In which of the following eons did a significant amount of oxygen gas exist in Earth's atmosphere?
    5·1 answer
  • Oceanic crust that records negative magnetic anomalies formed when the earth's magnetic field was ___________.
    15·1 answer
  • What are the elements of NaCl
    11·1 answer
  • The terminal speed of a sky diver is 163 km/h in the spread-eagle position and 325 km/h in the nosedive position. Assuming that
    7·1 answer
  • If a car starts from rest and attains a velocity of 10m/square in 5 secondscalculate the accerleration​
    14·2 answers
  • The 1kg rock is tied to a string and swung in a circular path as shown. The 1 meter string is tied to a post, and during the mot
    8·1 answer
  • the diagram below shows the situation described in the problem. the focal length of the lens is labeled f; the scale on the opti
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!