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
nadya68 [22]
3 years ago
8

True or False. There is no gain or loss of matter in a chemical reaction. *

Physics
1 answer:
lozanna [386]3 years ago
5 0

Answer:

True

Explanation:

Yes there is NO gain or loss of matter in a chemical reaction :)

You might be interested in
Starting from rest, a 2.3x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts
Harman [31]

Answer:

3.13 m/s

Explanation:

From the question,

Since the flea spring started from rest,

Ek = W................... Equation 1

Where Ek = Kinetic Energy of the flea spring, W = work done on the flea spring.

But,

Ek = 1/2mv²............ Equation 2

Where m = mass of the flea spring, v = flea's speed when it leaves the ground.

substitute equation 2 into equation 1

1/2mv² = W.................... Equation 3

make v the subject of the equation

v = √(2W/m)................. Equation 4

Given: W = 3.6×10⁻⁴ J, m = 2.3×10⁻⁴ kg

Substitute into equation 4

v = √[2×3.6×10⁻⁴ )/2.3×10⁻⁴]

v = 7.2/2.3

v = 3.13 m/s

Hence the flea's speed when it leaves the ground  = 3.13 m/s

4 0
3 years ago
If a polar is swimming with an average of 2.6 m/s how far will it traveled after 120 seconds ?
iragen [17]

Distance= speed x time

distance = 2.6 m/s x 120s

distance= 312 meters

6 0
3 years ago
3. Specify the wrong sentences.
soldi70 [24.7K]

Answer:

a: false

b: True

c: i dont know

Explanation:

4 0
1 year ago
Chandra is doing an experiment to find out which type of dog food her dog prefers. The following are the steps of her experiment
ELEN [110]

Answer:

A the type of dog food because it was different and every other thing was the same.

8 0
3 years ago
Considering this analogy (current = rate that heat flows through a window, and voltage = temperature difference across the windo
erastovalidia [21]

Answer:

Explained

Explanation:

Resistance R in a current flow through an object is given by

R= \frac{\rho L}{A}

ρ = resistivity of the material

L= length of the object

A=  area of cross section

clearly resistance is directly dependent on length of the object.This means greater the length larger will be resistance to current.

thermal resistance R_th is given by

R_{th} = \frac{L}{KA}

L= length of the object

A=  area of cross section

K = Conductivity of the material

thermal resistance is also is directly dependent on length of the object.This means greater the length larger will be resistance to current.

8 0
3 years ago
Read 2 more answers
Other questions:
  • is a climate cycle where the temperature of the Ocean changes because of movements of air and ocean currents. During this period
    8·1 answer
  • If an element has a charge of 4+, how many more protons does it have than electrons
    13·1 answer
  • Which law describes how the Earth applies a gravitational force on the Moon, the Moon applies a gravitational force on Earth? *
    8·2 answers
  • A reducing elbow in a horizontal pipe is used to deflect water flow by an angle θ = 45° from the flow direction while accelerati
    7·1 answer
  • An oxygen atom at a particular site within a DNA molecule can be made to execute simple harmonic motion when illuminated by infr
    5·1 answer
  • How long will it take to travel 200 km traveling 100m/s?
    8·1 answer
  • joe spend 8 on lunch and 6.50 on dry cleaning . He also buys 2 shirts that each cost the same smount. joe spend a total of $52 w
    14·1 answer
  • What do we call the quantity force multiplied by distance
    7·2 answers
  • An ideal monatomic gas initially has a temperature of 300 K and a pressure of 5.79 atm. It is to expand from volume 420 cm3 to v
    12·1 answer
  • 1) A bowling has a mass of 5 kg and a speed of 8 m/s. What is its momentum?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!