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
oksano4ka [1.4K]
2 years ago
13

What should you do before each laboratory exercise?

Physics
2 answers:
polet [3.4K]2 years ago
7 0
A) review all safety procedures and the lab activity procedure
liraira [26]2 years ago
3 0

Answer:

OA. . review all safety procedures and the lab activity procedure

Explanation:

You might be interested in
What is the resistance of al lamp that allows a current of 10 amps with 120 volts
BartSMP [9]
V=ir
I=10
v=120
r=?
r=v/i
r=120/10
r=12 ohm
5 0
2 years ago
What have we learned from the work of harlow shapley and others about the location of the sun in the milky way galaxy?.
marin [14]

We learned that We are in the disk of the Galaxy, about 5/8 of the way from the center.

<h3></h3><h3>What is the work of Harlow Shapley?</h3>

Shapley, who was based in Boulder, Colorado, utilised Cepheid variable stars to determine the Milky Way Galaxy's size and the Sun's location within it through the use of parallax. He put out his "liquid water belt" theory, now referred to as the idea of a livable zone, in 1953.

Milky way Galaxy-

There are many stars, grains of dust, and gas in the Milky Way. It is known as a spiral galaxy because, from the top or bottom, it would appear to be whirling like a pinwheel. About 25,000 light-years from the galaxy's nucleus, the Sun is situated on one of the spiral arms.

Approximately 5/8 of the way from the galaxy's nucleus, we are in the disc. William Herschel believed that the Sun and Earth were about in the middle of the vast cluster of stars known as the Milky Way.

to learn more about Harlow Shapley's original estimate go to - brainly.com/question/28145909

#SPJ4

3 0
1 year ago
You place an ice cube of mass 7.50×10−3kg and temperature 0.00∘C on top of a copper cube of mass 0.220 kg. All of the ice melts,
g100num [7]

Answer:

T = 29.66 ^o C

Explanation:

As we know that here final equilibrium temperature is 0 degree C

so we can use energy conservation here

heat given by the cube = heat absorbed by the ice

so we have

ms \Delta T = m' L

so here we have

0.220(385)(T - 0) = (7.50 \times 10^{-3})(3.35 \times 10^5)

T = \frac{2512.5}{0.220 \times 385}

T = 29.66 ^o C

5 0
3 years ago
2 Why <br> Force is needed​
nirvana33 [79]

Answer:

The use of force in our everyday life is very common. We use force to walk on the road, to lift the objects, to throw a cricket ball, or to move a given body by some particular speed or direction. We are very familiar with the various effects of force. We can exert pull and push.

Explanation:

plzzz brainlist me

3 0
3 years ago
Your little sister is building a radio from scratch. Plans call for a 500 μH inductor wound on a cardboard tube. She brings you
gayaneshka [121]

Answer:

N = 195 turns

Explanation:

The inductance of the inductor, L = 500 μH = 500 * 10⁻⁶H

The length of the tube, l = 12 cm = 0.12 m

The diameter of the tube, d = 4 cm = 0.04 m

Radius, r = 0.04/2 = 0.02 m

Area of the tube, A = πr² = 0.02²π = 0.0004π m²

\mu_{0} = 4\pi * 10^{-7}

The inductance of a solenoid is given by:

L = \frac{\mu_{0}N^{2} A }{l}

500 * 10^{-6} = \frac{4\pi *10^{-7}  N^{2} *4\pi  *10^{-4}  }{0.12}\\500 * 10^{-6} = 0.00000001316N^{2} \\N^{2} = \frac{500 * 10^{-6}}{0.00000001316}\\N^{2} = 37995.44\\N = \sqrt{37995.44} \\N = 194.92 turns

8 0
2 years ago
Other questions:
  • Which object absorbs the most visible light?
    10·2 answers
  • A resistor is connected across an oscillating emf. The peak current through the resistor is 2.0 A. What is the peak current if:
    5·1 answer
  • Using a series circuit, remove one battery from the circuit by re-wiring. How did it change the brightness of the bulbs? How doe
    9·1 answer
  • How much work does the electric field do in moving a proton from a point with a potential of +130 v to a point where it is -70 v
    14·1 answer
  • Name four factors that affect local, regional climates?
    5·2 answers
  • Elizabeth noticed an increase of Mountain Bluebird sightings in her neighborhood. She wanted to know if there was an increase in
    7·1 answer
  • These steps are followed when using the half-life of carbon-14 to determine the age of an object that contains carbon. what is t
    12·2 answers
  • 2. In any energy transformation, energy is _____. A created B conserved C destroyed
    9·1 answer
  • Which diagram shows energy transformation in a moving LRT?
    6·2 answers
  • I need written answer with solution:-
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!