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
Alex
2 years ago
9

Select the correct answer.

Physics
1 answer:
nignag [31]2 years ago
7 0

Answer:

B

Explanation:

because if grocery store has a weak stability it will collapse when face strong naturally weather

You might be interested in
Objects in motion eventually stop moving due to a _____ .can someone help me with this question
Tom [10]

External force.

Air resistance, friction, grass rubbing on a rolling ball, etc.

If there is no external force on a moving object, it keeps going.

Forever !

8 0
3 years ago
Give an example of Electrical Force
IgorC [24]

Answer: Sometimes people try to use there flashlight but it doesnt turn on they take out there battierise and they rub them together. It doesnt work so they get new battiries

Explanation: please mark me brainlies i have a goal im tryna reach thank you!!

4 0
3 years ago
In midair in the international space station a 1 kg chunk of putty moving at 1 m/s collides with and sticks to a 5 kg chunk of p
Delicious77 [7]
<span>We know that the momentum keeps constant in a inelastic collisions, so the product of mass and speed do not change:
   m1 * v1 + m2 * v2 = m * v
 1 * 1 + 5 * 0 = (1 + 5) * v
  1 = 6 * v
 v = 1/6 m/s
   So the final speed of the 6 kg chunk will travel at 0.167 m/s</span>
6 0
3 years ago
A wind turbine works by slowing the air that passes its blades and converting much of the extracted kinetic energy to electric e
ddd [48]

Answer:

2649600 Joules

Explanation:

Efficiency = 40%

m = Mass of air = 92000 kg

v = Velocity of wind = 12 m/s

Kinetic energy is given by

K=\frac{1}{2}mv^2\\\Rightarrow K=\frac{1}{2}\times 92000\times 12^2\\\Rightarrow K=6624000\ J

The kinetic energy of the wind is 6624000 Joules

The wind turbine extracts 40% of the kinetic energy of the wind

E=0.4\times K\\\Rightarrow E=0.4\times 6624000\\\Rightarrow E=2649600\ J

The energy extracted by the turbine every second is 2649600 Joules

8 0
3 years ago
The weights in atwoods machine, starting at rest, attain a velocity of 2ft/sec in one sec. Find the ratio of the masses
Orlov [11]
Refer to the figure shown below.
Let m₁ and m₂ e the two masses.
Let a = the acceleration.
Let T =  tension over the frictionless pulley.

Write the equations of motion.
m₂g - T = m₂a            (1)
T - m₁g = m₁a            (2)

Add equations (1) and (2).
m₂g - T + T - m₁g = (m₁ + m₂)a
(m₂ - m₁)g = (m₁ + m₂)a

Divide through by m₁.
(m₂/m₁ - 1)g = (1 + m₂/m₁)a

Define r = m₂/m₁ as the ratio of the two masses. Then
(r - 1)g = (1 +r)a
r(g-a) = a + g
r = (g - a)/(g + a)

With  = 2 ft/s from rest, the acceleration is
a = 2/32.2 = 0.062 ft/s²
Therefore
r = (32.2 - 0.062)/(32.2 + 0.062) = 0.9962

Answer:
The ratio of masses is 0.9962 (heavier mass divided by the lighter mass).

8 0
3 years ago
Other questions:
  • A sonar wave is reflected from the ocean floor. For which angles of incidence do the wave’s angle of reflection equal its angle
    7·1 answer
  • Volcanoes are often formed at plate boundaries. This is a convergent plate boundary. From the choices listed, pick the correct d
    8·2 answers
  • Rank them from fastest to slowest in how quickly each warms up: (a) steel, 450 j/kgââc ; (b) aluminum, 910 j/kgââc ; (c) copper,
    11·1 answer
  • What are two thing the atmidspere do for us?
    10·1 answer
  • Select the correct equations that show that a freely falling rock drops a distance of 80 m when it falls from rest for 4 s .
    15·1 answer
  • A bullet that has been too badly mutilated to mark can be
    7·1 answer
  • Jillian can't bear to leave her home without washing all the linens and floors, vacuuming the carpets, and organizing everything
    15·1 answer
  • Two for are at an angle at 120 ,the bigger forces is 40N and the resultant is perpendicular to the smaller one. find the smaller
    15·1 answer
  • Which of the following is not true?
    12·2 answers
  • How does light behaves when light passes through water?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!