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
Triss [41]
2 years ago
5

True or False: A chemical reaction always happens when two substances are combined. (please help fast this is a test)

Physics
2 answers:
mina [271]2 years ago
8 0

Answer:probably false

Explanation:

Every time you mix two substances it doesn’t mean it’s going to have a reaction, they have to be two substances that don’t combine. I really hope this helps

Makovka662 [10]2 years ago
6 0

Answer:

no not always sometimes they react at all so false I hope I helped :)

You might be interested in
What Does This Poem Mean?
Ann [662]
Nakakakak skskskksksksks
7 0
2 years ago
Describe the motion of an object that has an acceleration of 0 mi./s squared
miskamm [114]
The object does not move.
5 0
3 years ago
At a certain location, Earth has a magnetic field of 0.60 ✕ 10−4 T, pointing 75° below the horizontal in a north-south plane. A
saveliy_v [14]

Answer with Explanation:

We are given that

Magnetic field,B=0.6\times 10^{-4} T

\theta=75^{\circ}

Length of wire,l=15 m

Current,I=19 A

a.We have to find the magnitude of magnetic force and direction of magnetic force.

Magnetic force,F=IBlsin\theta

Using the formula

F=0.6\times 10^{-4}\times 15\times 19sin75

F=16.5\times 10^{-3} N

Direction=tan\theta=cot(90-75)=tan15^{\circ}

\theta=15^{\circ}

15 degree above the horizontal  in the northward direction.

5 0
3 years ago
an object of mass 8 kg is whriled round in a vertical circle of radius 2m with a constant speed of 6m/s .Then the maximum and mi
algol13

Answer:

Maximum Tension=224N

Minimum tension= 64N

Explanation:

Given

mass =8 kg

constant speed = 6m/s .

g=10m/s^2

Maximum Tension= [(mv^2/ r) + (mg)]

Minimum tension= [(mv^2/ r) - (mg)]

Then substitute the values,

Maximum Tension= [8 × 6^2)/2 +(8×9.8)] = 224N

Minimum tension= [8 × 6^2)/2 -(8×9.8)]

=64N

Hence, Minimum tension and maximum Tension are =64N and 2224N respectively

5 0
2 years ago
The first step in a star formation is ______?
Mariana [72]
First look at the star
8 0
2 years ago
Read 2 more answers
Other questions:
  • What is science? Science is observable, testable, replicable, reliable and flexible.
    8·1 answer
  • A 3.2 kg particle starts from rest at x = 0 and moves under the influence of a single force Fx = 4 + 15.7 x − 1.5 x 2 , where Fx
    15·1 answer
  • Fomula of displacementtt<br>help
    11·2 answers
  • All of the following are electromagnetic waves except
    15·1 answer
  • Hydrogen bombs and stars both produce energy with nuclear ?
    11·1 answer
  • When you catch a baseball with a glove (instead of your hand), the glove helps by
    15·1 answer
  • The electric field force is a ___________ quantity.
    10·1 answer
  • An artificial satellite orbits Earth at a speed of 7800 m/s and a height of 200 km above Earth’s surface. The satellite experien
    7·1 answer
  • identify the action reaction forces in each picture the first picture is done for you write your answer on a separate sheet of p
    6·1 answer
  • how do you Compute the approximate acceleration of gravity for an object above the earth's surface, assigning accel gravity with
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!