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
aleksley [76]
3 years ago
13

3. Waxing means "growing." Waning means

Physics
2 answers:
Sonja [21]3 years ago
4 0

Answer:

I think it is the last one.

Explanation:

I am not sure because i am stuck on this one, too.

Stells [14]3 years ago
3 0

Answer: it is the first one.

Explanation: it is because when the moon is waxing, the light grows more on the right

You might be interested in
Which of these is not a type of force?
coldgirl [10]
Inertia
the awnswer is inertia b
6 0
3 years ago
Read 2 more answers
A bullet with an initial kinetic energy of 400 J strikes a wooden block where a 8000 N resistive force stops the bullet. What is
Sindrei [870]

Answer:

d = 0.05 [m] = 50 [mm]

Explanation:

We must remember the principle of conservation of energy which tells us that energy is transformed from one way to another. For this case, the initial kinetic energy is transformed into useful work that is equal to the product of force by distance.

E_{k}=F*d\\400 = 8000*d\\d = 0.05 [m] = 50 [mm]

5 0
3 years ago
A mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. It ta
Tomtit [17]

Answer:

(a) 185 N/m

(b) 3.083 kg

Explanation:

(a)

Using,

E = 1/2ke²....................... Equation 1

Where E = work done to compress the spring, k = spring constant of the spring, e = compression of the spring.

make k the subject of the equation

k = 2E/e²............... Equation 2

Given: E = 3.7 J, e = 0.20 m

Substitute into equation 2

k = 2(3.7)/0.2²

k = 185 N/m.

(b)

Using,

F = ma.............. Equation 2

Where F = force applied to the spring, m = mass attached to the spring, a = acceleration of the spring.

But from hook's law,

F = ke................. Equation 3

substitute equation 3 into equation 2

ke = ma

make m the subject of the equation

m = ke/a................ Equation 4

Given: k = 185 N/m, e = 0.2 m, a = 12 m/s²

Substitute into equation 4

m = 185(0.2)/12

m = 3.083 kg

3 0
3 years ago
Read 2 more answers
Sounds are produced by objects that are______
ahrayia [7]

Answer: Vibrating

Explanation:

Sound is produced when an object vibrates. The sound vibrations cause waves of pressure that travel through a medium, such as air, water, wood or metal. Sound is a form of mechanical energy.

7 0
3 years ago
An object falls from a high building and hits the ground in 8.0 seconds. Ignoring air resistance, what is the distance that it f
d1i1m1o1n [39]

Answer:

310 meters

Explanation:

Given:

v₀ = 0 m/s

t = 8.0 s

a = -9.8 m/s²

Find: Δy

Δy = v₀ t + ½ at²

Δy = (0 m/s) (8.0 s) + ½ (-9.8 m/s²) (8.0 s)²

Δy = -313.6

Rounded to two significant figures, the object fell 310 meters.

4 0
3 years ago
Other questions:
  • Suppose we replace the mass in the video with one that is four times heavier. How far from the free end must we place the pivot
    14·1 answer
  • For study, the Earth can be divided into three parts:
    15·2 answers
  • A dog is 60m away while moving at constant velocity of 10m/s towards you. Where is the dog after 4 seconds?
    15·2 answers
  • Why is earth a magnet?
    12·1 answer
  • People under going physical therapy after an injury often find it helpful to perform exercise in water? Why?
    15·1 answer
  • A ball is thrown so that its speed increases by 20 m/s in 10 seconds. What is the ball’s acceleration?
    13·1 answer
  • What is the helmet for
    10·1 answer
  • Besides a reduction in friction, the only way to increase the amount of work output of a machine is to _____ the work input. Dec
    15·1 answer
  • What is the applications of echo​
    8·2 answers
  • What is the unit of velocity ratio and why​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!