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
Ganezh [65]
3 years ago
15

Which list of observations is the best evidence of only a chemical change occurring?

Physics
1 answer:
Aleonysh [2.5K]3 years ago
7 0

Answer:

d

Explanation:

You might be interested in
What is the latin name for the hydra constellation
slava [35]
 The latin name for hydra constellation is "Water snake"
6 0
3 years ago
A wire 1 mm in diameter is connected to one end of a wire of the same material 2 mm in diameter of twice the length. A voltage s
miskamm [114]

Answer:

T = 2 T₀

Explanation:

To answer this question let's write the expression for electrical conductivity

    σ = n e2 τ / m*

The relationship with resistivity is

       ρ = 1 /σ

Whereby the resistance

        R = ρ L / A = 1 /σ  L / A

We see that there is no explicit relationship between time and resistance, there is only a dependence on the life time (τ) that depends on the properties of the material, not on its diameter or length.

As also the average velocity or electron velocity of electrons is constant, the time to cross 2 mm in length is twice as long as the time to cross a mm in length

 T = 2 T₀

8 0
3 years ago
A meter stick is free to rotate about an axis through one of its end. Find the force F needed to balance this meter stick if the
Mumz [18]

Answer:

Explanation:

Component of force perpendicular to stick

= F Sin 60°

=√3 / 2 F.

Taking torque about the other end

= √3 / 2 F x 1 Nm

Weight of stick = 60 gm

= 60 x 10⁻³ kg

= 60 x 10⁻³ x 9.8 N

= .588 N

This weight will act from the middle point of stick so torque about the

other end

= .588 x 1 Nm

Balancing these two torques we have

.588 = √3 /2 F

F=\frac{2\times0.588}{\sqrt{3} }

F = 0.679 N

6 0
3 years ago
The area of land where water is drained downhill into a body of water is known as a drainage basin, or _______.
GenaCL600 [577]
Water sheds i hope this helps give me a brainiest answer

6 0
3 years ago
Read 2 more answers
Which statement accurately describes the motion of the object in the graph above over 10 seconds? Group of answer choices The ob
timurjin [86]

Answer:

Object appears to move forward at 1 cm/sec, then the velocity drops to zero for 3 sec and then moves forward at 2 cm/sec     (11 - 3) / (10 - 6) = 2 cm/sec

7 0
2 years ago
Other questions:
  • Can someone tell me the acceleration?
    7·1 answer
  • PLZZ HELP???
    11·1 answer
  • An electric motor does 900j of work for 8 hours. Calculate the power used​
    10·1 answer
  • A bicyclist was moving at a rate of 8 m/s, and then sped up to 10 m/s. If the cyclist has a mass of 120 kg, how much work was ne
    11·2 answers
  • The escape velocity on earth is 11.2 km/s. What fraction of the escape velocity is the rms speed of H2 at a temperature of 31.0
    10·1 answer
  • Time time it takes two successive crests of an ocean wave to pass a given point is called
    5·1 answer
  • Complete the equation to show the radioactive decay of carbon-14 to nitrogen-14
    5·1 answer
  • A skier rides a ski-lift up to the top of the mountain, 1600 m above sea level. If the skier has a mass of 74 kg, how much poten
    12·1 answer
  • What happened to the speed of light if it travels from air into glass?
    14·1 answer
  • HELP: I’ve been stuck on this problem for a while now.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!