Astronomy can best be described as a/an

Answers

Answer 1
Answer: as·tron·o·my- the branch of science that deals with celestial objects, space, and the physical universe as a whole. That's the definition hope it is what you need and that it helps:)
Answer 2
Answer: The study of heavenly bodies. 

How that differs from astrophysics, astro dynamics, cosmology, etc., I'm not entirely sure.

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The horizontal sweep of an oscilloscope is rated in

Answers

Seconds/Division

An oscilloscope measures time-varying waveform. Electrical input signal is concerted into detectable trace on a screen by converting electricity into light. Time period is plotted along the x -axis as the horizontal component. The center vertical line (y-axis) represents the voltage.

Termometer X menunjukkan skala -10°x ,ketika dicelupkan ke dalam air es dan menunjukkan skala 90°x ketika dicelupan ke dalam air mendidih. Suhu 50°x itu sesuai dengandenganA. 40°C
B. 60°C
C. 60°C
D 70°C
E. 80°C

Answers

E i think im not so sure...

How do you know an object is in motion?a. it has inertia
b. it has mass
c. it is changing position
d. it has a reference point

Answers

c
because an object need to be in motion to make any kind of movement

How must of the roller coaster's kinetic and/or potential energy is in each of the points. For each point, pick one option. (Sorry for the report, I found a mistake in my question and could not edit.)Point A:
a. 1/2 Potential Energy, 1/2 Kinetic Energy
b. 1/2 Potential Energy, 0 Kinetic
c. 100 Potential Energy

Point B:
a. 1/4 Potential, 3/4 Kinetic
b. 100 Kinetic, 0 Potential
b. 1/2 Potential, 1/2 Kinetic

Point C:
a. 1/2 Potential, 1/2 Kinetic
b. 3/4 Potential, 1/4 Kinetic
c. 100 Potential, 0 Kinetic

Answers

Answer

  1. Point A-
  2. Point B-
  3. Point C- 100 Potential, 0 Kinetic

I have a question and no one has helped me yet so I'm re-submitting it. thanks in advance. ​

Answers

Apply this kinematics equation for the particle's vertical motion:

D = Vt + 0.5At²

D = vertical distance traveled, t = time, V = initial vertical velocity, A = vertical acceleration

Given values:

D = 49m

V = 34.3m/s

A = -9.81m/s²

Plug in and solve for t:

49 = 34.3t - 4.905t²

4.905t² - 34.3t + 49 = 0

Use the quadratic roots formula to find the values of t:

t ≈ 2, 5

The particle reaches a height of 49m at t = 2s & t = 5s

Lifting a bale of cotton is no easy task. Farmer Jones wanted to store the cotton in the loft of his barn but he could not budge the bale. He consulted the high school's science teacher for help. She suggested a simple machine. Farmer Jones' options included an inclined plane, a fixed pulley, a block and tackle, and a lever. If he had to lift the bale of cotton to a height of fifteen feet, which would be the MOST practical solution?

A) lever
B) screw
C) inclined plane
D) block and tackle (pulley)

Answers

An inclined plane would not be practical because he would still have to push it and the amount of effort and energy would increase. A lever would not be practical because he would have to use his weight to make the bale rise 15 feet. He would also need to make sure that he has a 15 foot ladder in the first place. A screw would not be practical because he would have to drill a hole through the medium and use rotation.

A pulley would be the most practical way of moving the cotton bale. A pulley supports movement and will help the farmer move the bale.

\sf\ Answer:\ D)\ BLOCK\ AND\ TACKLE\ (PULLEY)

Answer:

d

Explanation: