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
Fofino [41]
3 years ago
9

All of these are examples of chemical reactions except _____________________________.

Physics
1 answer:
Luda [366]3 years ago
4 0
C. The heating element on a stove turning from black to orange

Hope this helps =]
You might be interested in
A mass of 2 kg traveling at 3 m/s undergoes a one-dimensional elastic collision with a group of four 1kg masses that are at rest
alukav5142 [94]
2kg + 3 kg = 5 kg as result of the conclusion
6 0
3 years ago
Near the surface of Earth an electric field points radially downward and has a magnitude of approximately 100 N/C. What charge (
pentagon [3]

Answer:

q=2.997\times 10^{-4}C

Sign-Negative

Explanation:

We are given that

Electric field =E=100NC^{-1} (Radially downward)

Acceleration=0.19 ms^{-2}(Upward)

Mass of charge=3 g=3\times 10^{-3}kg

1kg=1000g

We have to find the magnitude and sign of  charge would have to be placed on a penny .

By newton's second law

\sum F_y=ma

\sum F_y=qE-mg

Substitute the values then we get

qE-mg=ma

Substitute the values then we get

q(100)-3\times 10^{-3}(9.8)=3\times 10^{-3}(0.19)

100q-29.4\times 10^{-3}=0.57\times 10^{-3}

100q=0.57\times 10^{-3}+29.4\times 10^{-3}=29.97\times 10^{-3}

q=\frac{29.97\times 10^{-3}}{100}

q=2.997\times 10^{-4}C

Sign of charge =Negative

Because electric force acting  in opposite direction of electric field therefore,charge on penny will be negative.

4 0
3 years ago
What property or properties of a wave determine it's speed?
mash [69]
The properties of the wave don't determine its speed. The properties of the medium do. You can FIND the speed by measuring the wave's frequency and wavelength.
7 0
3 years ago
PLZ HELP WILL GIVE BRAINLIEST
xxTIMURxx [149]

Answer:

12.7m/s

Explanation:

Given parameters:

Mass of the diver = 77kg

Height  = 8.18m

Unknown:

Final velocity  = ?

Solution:

To solve this problem, we use one of the motion equations.

            v²  = u² + 2gh

v is the final velocity

u is the initial velocity

g is the acceleration due to gravity

h is the height

             v² = 0² + (2 x 9.8 x 8.18)

             v² = 160.3

             v = 12.7m/s

7 0
3 years ago
Why does a partially inflated weather balloon expand as it rises?
marusya05 [52]
Air pressure pushing in on the balloon decreases as the balloon rises.
3 0
3 years ago
Read 2 more answers
Other questions:
  • A tuning fork vibrates 240 times per second. What is the frequency and period?
    9·1 answer
  • if an objects velocity doesn't tell us about the net force on an object, what characteristic of its motion does?
    15·2 answers
  • An electron passes through a point 2.35 cm 2.35 cm from a long straight wire as it moves at 32.5 % 32.5% of the speed of light p
    7·2 answers
  • Help please am stuck
    9·1 answer
  • A dog walks 14 meters to the west and then 20 meters back
    15·1 answer
  • A box exerts a force of 540 N onto the floor and the bottom of the box is 0.5 m2. What is the pressure the box exerts on the flo
    7·2 answers
  • When a body moves from point A to point B the distance travelled in 500 meters with in a given time of 0.6 hours and find out th
    5·1 answer
  • What would be a disadvantage of asexual reproduction for an organism
    15·1 answer
  • What technology produced the results illustrated here, and what is this technology used for?
    15·2 answers
  • A mass M is suspended from a spring and oscillates with a period of 0.840 s. Each complete oscillation results in an amplitude r
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!