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
oksian1 [2.3K]
2 years ago
15

The weight of an apple at 4r from earth is of that on earth

Physics
2 answers:
iris [78.8K]2 years ago
4 0
W = m.g = weight
g = Gme/Re**2 where G= universal gravitational constant , Re= radius of the earth
me= mass of the earth
therefore it weighs 16 times less
Virty [35]2 years ago
4 0

1/16 of the earths mass

You might be interested in
What is electrostatic force? ​
zalisa [80]

"Electrostatic forces are attractive or repulsive forces between particles that are caused by their electric charges."

5 0
3 years ago
Jon's bathtub is rectangular and its base is 18 ft2. (a) How fast is the water level rising if Jon is filling the tub at a rate
Kitty [74]

Answer:

The water level in the bath tub is rising at a rate of 0.0111 ft/s

Explanation:

Volume of the bath tub = (Area of base) × (height)

Area of base = 18 ft² (constant)

Height = h (variable)

V = 18h

(dV/dt) = 18 (dh/dt)

If (dV/dt) = 0.2 ft³/s

0.2 = 18 (dh/dt)

(dh/dt) = (0.2/18)

(dh/dt) = 0.0111 ft/s

Hope this Helps!!!

6 0
3 years ago
Read 2 more answers
Air flows through an adiabatic turbine that is in steady operation. The air enters at 150 psia, 900oF, and 350 ft/s and leaves a
Nonamiya [84]

Answer:

1486.5\frac{Btu}{s}

Explanation:

The inlet specific volume of air is given by:

v_1=\frac{RT_1}{P_1}\\\\v_1=\frac{(0.3704\frac{psia.ft^3}{lbm.R})(1360R)}{150psia}\\\\v_1=3.358\frac{ft^3}{lbm} \ \ \ \  \ \  \ \ \...i

The mass flow rates is expressed as:

\dot m=\frac{1}{v_1}A_1V_1\\\\\dot m=\frac{1}{3.358ft^3/psia}(0.1ft^2)(350ft/s)\\\\\dot m=10.42\frac{lbm}{s}

The energy balance for the system can the be expresses in the rate form as:

E_{in}-E_{out}=\bigtriangleup \dot E=0\\\\E_{in}=E_{out}\\\\\dot m(h_1+0.5V_1^2)=\dot W_{out}+\dot m(h_2+0.5V_2^2)+Q_{out}\\\\\dot W_{out}=\dot m(h_2-h_1+0.5(V_2^2-V_1^2))=-m({cp(T_2-t_1)+0.5(V_2^2-V_1^2)})\\\\\\\dot W_{out}=-(10.42lbm/s)[(0.25\frac{Btu}{lbm.\textdegree F})(300-900)\textdegree F+0.5((700ft/s)^2-(350ft/s)^2)(\frac{1\frac{Btu}{lbm}}{25037ft^2/s^2})]\\\\\\\\=1486.5\frac{Btu}{s}

Hence, the mass flow rate of the air is 1486.5Btu/s

5 0
2 years ago
The number of moons a planet has orbiting around it is determined by...
Pavlova-9 [17]

We have no idea.  There are probably many things involved ... the planet's mass,
the availability of small bodies in the neighborhood that can be captured, etc.


7 0
2 years ago
An ice skater's mass is 5 Kg, she hits a wall with a force of 10 N. What was her acceleration?
Harman [31]

Answer:

What was her acceleration and distance she moved during her ... Identify the following as a scalar or vector: the mass of an object, the number of leaves on a ... Once the chair is in motion, a 127 N horizontal force keeps it moving at a constant velocity. a. ... A 65 kg skater standing on frictionless ice throws a 0.15 kg snowball ...

Explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • A feather is dropped on the moon from the height of 1.4m. The acceleration of gravity on the moon is 1.67ms-1. Determine the tim
    11·1 answer
  • A man at a carnival lifts a hammer high over his head before swinging it down onto a pad
    5·1 answer
  • The force of gravity pulls down on your school with a total force of 400,000 newtons. The force of gravity pulling down on your
    14·1 answer
  • A mass M is attached to an ideal massless spring. When this system is set in motion with amplitude A, it has a period T. What is
    5·1 answer
  • Which of the following features are found at an oceanic-continental convergent plate boundary?choose all that apply: 1-island ar
    11·2 answers
  • Electronegativity is<br>____ at the top of the periodic table.​
    5·2 answers
  • Parallel wave fronts are incident on an opening in a barrier. Which diagram shows the configuration of wave fronts and barrier o
    6·2 answers
  • Three cars are tested in a 16 m/s frontal crash. The results of the crash tests are shown below, with data indicating how much t
    9·2 answers
  • 3. Forces do ________ always cause an object to move.<br> need this ASAP
    6·2 answers
  • Would someone just answer this now?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!