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
poizon [28]
3 years ago
8

Leticia timed how fast five apple slices turned brown (oxidate) after being being dipped in different preservatives such as lemo

n juice, fruit freshener, salt water and lime soda. another part of the experiment had the apple slices simply set out without any chemical on them. all parts of the experiment had the apple slices in the same indoor conditions such as humidity temperature and lighting; also only one variety of apple-red delicious was used.
Identify each of the following independent variable, dependent variable, constants, control experiment and repeated trials.
Physics
2 answers:
FrozenT [24]3 years ago
6 0

Answer:sorry but i no understand

Explanation:

Brut [27]3 years ago
3 0

Answer:

Independent Variable: Choice of preservative

Dependent Variable: Time it took to brown

Controlled Variables/Constants: Climate, Size of apple slices, and amount of preservative on each slice

Control: Apple Slices without preservatives on them

Repeated Trials: One?

Explanation:

You might be interested in
What do scientist use to determine the temperature of a star
REY [17]

Color is what scientist use to determine the temperature of a star!

hope this helps!

4 0
3 years ago
A steel ball of mass 0.500 kg is fastened to a cord that is 70.0 cm long and fixed at the far end. The ball is then released whe
Liula [17]

Answer:

a) v₁fin = 3.7059 m/s   (→)

b) v₂fin = 1.0588 m/s     (→)

Explanation:

a) Given

m₁ = 0.5 Kg

L = 70 cm = 0.7 m

v₁in = 0 m/s   ⇒  Kin = 0 J

v₁fin = ?

h<em>in </em>= L = 0.7 m

h<em>fin </em>= 0 m   ⇒    U<em>fin</em> = 0 J

The speed of the ball before the collision can be obtained as follows

Einitial = Efinal

⇒ Kin + Uin = Kfin + Ufin

⇒ 0 + m*g*h<em>in</em> = 0.5*m*v₁fin² + 0

⇒ v₁fin = √(2*g*h<em>in</em>) = √(2*(9.81 m/s²)*(0.70 m))

⇒ v₁fin = 3.7059 m/s   (→)

b)  Given

m₁ = 0.5 Kg

m₂ = 3.0 Kg

v₁ = 3.7059 m/s    (→)

v₂ = 0 m/s

v₂fin = ?

The speed of the block just after the collision can be obtained using the equation

v₂fin = 2*m₁*v₁ / (m₁ + m₂)

⇒  v₂fin = (2*0.5 Kg*3.7059 m/s) / (0.5 Kg + 3.0 Kg)

⇒  v₂fin = 1.0588 m/s     (→)

7 0
3 years ago
state and explain any effect on sensitivity of liquid in a glass thermometer (i) reducing the diameter of capillary tube​
Ad libitum [116K]

Answer:

please give me brainlist and follow

Explanation:

The measuring sensitivity of liquid-in-glass thermometers increases with the amount of liquid in the thermometer. The more liquid there is, the more liquid will expand and rise in the glass tube. For this reason, liquid thermometers have a reservoir to increase the amount of liquid in the thermometer.

4 0
3 years ago
Define electric potential energy
Verizon [17]
Electric potential energy, or Electrostatic potential energy, is a potential energy that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within a defined system.
3 0
3 years ago
Read 2 more answers
How do waves behave differently to Earth's interior as they encounter the boundaries of different mediums?
Natalka [10]

Answer:

Explanation:

When they encounter boundaries between different media, the waves react according to Snell’s law, and the angle of refraction across the boundary will depend on the velocity of the second media relative to the first

3 0
3 years ago
Other questions:
  • An area of wave-washed sediment along a coast is called a __________.
    11·2 answers
  • The atomic number of beryllium (Be) is 4, and the atomic number of barium (Ba) is 56. Which comparison is best supported by this
    11·2 answers
  • Which of the following correctly shows the chain of energy transfers that create surface currents on the ocean?
    11·1 answer
  • A force of 20 N is inclined at 30 degrees to the X axis. What are X and Y components of the force?
    7·2 answers
  • Large sections of troposphere with same temperature and humidity is called
    12·1 answer
  • Light traveling through air strikes the surface of the four different materials below. which material reflects light but doesn't
    12·2 answers
  • A planet has a circular orbit around a star. It is a distance of 53,000,000 km from the centre of the star.
    14·1 answer
  • 1.25 is the closest to 1.04 or not I want to answer please. I think it's true, but I want to prove it scientifically, please.
    6·1 answer
  • A teacher wants to demonstrate that the radioactive source emits alpha beta and gamma radiation. Describe a method the teacher c
    11·1 answer
  • Which applications, either for diagnostic purposes or for therapeutic purposes, involve the use of X-rays
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!