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
jarptica [38.1K]
3 years ago
12

During a lesson in physical science about changes of matter, students made ice cream. among the materials that are required to m

ake ice cream is salt. which answer choice best explains the role of salt in this activity? adding salt to ice lowers the freezing temperature. this helps the milk mixture to freeze sooner because the mixture will reach the freezing temperature sooner. adding salt to the ice raises the freezing temperature. this helps the milk mixture to delay in freezing, giving the ice cream enough time to form and have a great taste. adding salt prevents the milk in the ice cream from going bad and giving the ice cream a bad taste. salt in ice cream preparation is used as a preservative to enable the ice cream to have a longer shelf life.
Physics
2 answers:
xxTIMURxx [149]3 years ago
8 0
A. <span>Adding salt to ice lowers the freezing temperature. This helps the milk mixture to freeze sooner because the mixture will reach the freezing temperature sooner.</span>
Tom [10]3 years ago
7 0

The answer is A. Have a nice day!

You might be interested in
Velocity differs from speed in that velocity indicates a particle's __________ of motion.
masha68 [24]
Velocity differs from speed in that velocity indicates a particle's <span>direction of motion. 

Therefore, your correct answer is: D</span><span>irection

Good luck with your studies, I hope this helps~!</span>
5 0
3 years ago
Does anyone know 19 and 20 ??
harina [27]
B I think for 19 and D for 20
4 0
3 years ago
A scientist that applies the laws of science to the needs of communities is called _____.
s2008m [1.1K]

Answer:

The experimental scientist

5 0
3 years ago
Gauss's law combines the electric field over a surface with the area of the surface. From Coulomb's law we know that the electri
Romashka-Z-Leto [24]

The change in surface area of Gaussian surface with radius (r) is 8πr.

<h3>Electric field from Coulomb's law</h3>

The electric field experienced by a charge is calculated as follows;

E = \frac{Q}{4\pi \varepsilon_o r^2}

where;

  • E is the electric field
  • Q is the charge
  • r is the radius

The electric field reduces by a factor of \frac{1}{r^2}

<h3>Surface area of a Gaussian surface;</h3>

The surface area of a sphere is given as;

A = 4\pi r^2

<h3>Change in area with r</h3>

\frac{dA}{dr} = 8\pi r

Thus, the change in surface area of Gaussian surface with radius (r) is 8πr.

Learn more about area of Gaussian surfaces here: brainly.com/question/17060446

7 0
2 years ago
A machine in an ice factory is capable of exerting 3.00x10^2 N of force to pull a large block of ice up a slope. The block weigh
aivan3 [116]

Answer:

1.41 °

Explanation:

From machine,

The formula for the efficiency of machine is

E(%) = (M.A/V.R)×100................. Equation 1

Where E(%) = Percentage Efficiency of the machine, M.A = Mechanical Advantage of the machine, V.R = Velocity ratio of the machine.

Note: A slope forms an an inclined plane with the horizontal

Make V.R the subject of the equation

V.R = 100M.R/E(%)................. Equation 2

But,

M.A = L/E......................... Equation 3

Where Load, E = Effort.

Given: E = 3.00×10² N, L = 1.22×10⁴ N

Substitute into equation 3

M.A = 1.22×10⁴ / 3.00×10²

M.A = 40.7.

Note: Assuming no friction means that the efficiency of the inclined plane(slope) = 100 %

Hence, E(%) = 100 %

Substitute into equation 2

V.R = 100(40.7)/100

V.R = 40.7.

The velocity of an inclined plane is

V.R = 1/sin∅........................... Equation 4

Where ∅ = maximum angle that the slope makes with the horizontal.

make ∅ the subject of the equation

∅ = sin⁻¹(1/V.R)................... Equation 5

Substitute the value of V.R into equation 5

∅ = sin⁻¹(1/40.7)

∅ = sin⁻¹(0.0246)

∅ = 1.41 °

5 0
4 years ago
Read 2 more answers
Other questions:
  • Could someone help me on #7?
    8·1 answer
  • If a resident accidentally causes a chunk of ice to fall from the roof, how fast would the ice be moving when it hits the ground
    12·1 answer
  • A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.6 m/s at ground level.
    13·2 answers
  • When you need to pass a motorcycle, _____________.A. move into the left lane to pass the motorcycle B. pass to the left using th
    5·1 answer
  • A man weighs 645 N on Earth. What is his mass?
    5·2 answers
  • A guitar string is 87 cm long and has a mass of 3.7 g. from the bridge to the support post (= l is 63 cm, and the string is unde
    11·1 answer
  • 1 point
    15·1 answer
  • A 16 Ω resistor and a 6 Ω resistor are connected in series to an ideal 6 V battery.
    12·2 answers
  • Two identical cars are parked in the sun on a warm day. One car is black and the other is white. Both cars are parked for three
    11·2 answers
  • I need help with us history
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!