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
olga55 [171]
3 years ago
6

For number 1 I'm really confused

Physics
2 answers:
Airida [17]3 years ago
7 0
According to Newton's second law of motion,

F = mass x acceleration = 2 x 3 = 6 N.

Hence 6 N of force is required.

Hope this helps!
marishachu [46]3 years ago
4 0
The answer is 6{N}. :)
You might be interested in
An insulated beaker with negligible mass contains 0.250 kg of water at 75.0C. How many kilograms of ice at -20.0C must be droppe
kkurt [141]

Answer:

The amount of kilograms of ice at -20.0°C that must be dropped into the water to make the final temperature of the system 40.0°C = 0.0674 kg

Explanation:

Heat gained by ice in taking the total temperature to 40°C = Heat lost by the water

Total Heat gained by ice = Heat used by ice to move from -20°C to 0°C + Heat used to melt at 0°C + Heat used to reach 40°C from 0°C

To do this, we require the specific heat capacity of ice, latent heat of ice and the specific heat capacity of water. All will be obtained from literature.

Specific heat capacity of ice = Cᵢ = 2108 J/kg.°C

Latent heat of ice = L = 334000 J/kg

Specific heat capacity of water = C = 4186 J/kg.°C

Heat gained by ice in taking the total temperature to 40°C = mCᵢ ΔT + mL + mC ΔT = m(2108)(0 - (-20)) + m(334000) + m(4186)(40 - 0) = 42160m + 334000m + 167440m = 543600 m

Heat lost by water = mC ΔT = 0.25 (4186)(75 - 40) = 36627.5 J

543600 m = 36627.5

m = 0.0674 kg = 67.4 g of ice.

3 0
3 years ago
What functions normally performed by the placenta would the hatchery have to perform so that the embryos survive
horrorfan [7]
The functions that would be performed both by the placenta and the hatchery so that the embryos will survive is to maintain the temperature of the embryos. The temperature should also be at the temperature where the embryos would thrive and develop.
6 0
3 years ago
Please Help!!!<br><br> For A&amp;B
klio [65]

Answer:

A. 40N

B. 5m/s

Explanation:

A.

Impulse is equal to the area under the curve of a force vs. time graph. In this case, the area is in the shape of a triangle with base 8 (12-4=8) and perpendicular height 10:

<em>Area of a triangle = (1/2)bh</em>

A=(1/2)*8*10

=40

ANSWER: 40N

B.

<em>Impulse = mass * velocity</em>

40 = 8v

v = 5

ANSWER: 5m/s

5 0
3 years ago
As __________ increases, the humidity of that area will __________. temperature; also increase dew; also increase rainfall; alwa
Nady [450]
Always increase temperature
4 0
3 years ago
1.
zubka84 [21]

Answer:

D

Explanation:

Momentum= mass x speed (P=MV)

Momentum= 5x6=30

Momentum= 30kg m/s

7 0
2 years ago
Other questions:
  • A 75 kg pilot flies a plane in a loop. At the top of the loop, where the plane is completely
    8·1 answer
  • How proton ,neutron and electrons are alike
    5·1 answer
  • What is the thermal efficiency a carnot engine operating between the highest and lowest temperatures reached by this engine?
    6·1 answer
  • The electric resistance in a length of wire is doubled when the wire is _________.
    6·1 answer
  • What is the scientific method​
    12·2 answers
  • If we decrease the time it takes for a car to travel over the same distance, this will
    10·2 answers
  • In developed nations, the water delivered to homes by pipe is generally potable. Please select the best answer from the choices
    14·2 answers
  • When 1 kg of water and 1 kg of wood absorb the same amount of heat, the change in temperature of the wood is greater than the ch
    14·1 answer
  • a solid sphere and a hollow sphere with equal mass are rotated about an axis through their centers. both spheres experience equa
    9·1 answer
  • At what temperature, in degrees Celsius, is the speed of sound in air 339 m/s?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!