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
devlian [24]
3 years ago
14

Chloe wanted to find out if the color of a food would affect how quickly kindergarten children would eat it for lunch. She belie

ved that brightly colored food would be eaten more quickly because of the urgency of the color. She put food coloring into 4 identical serving bowls filled with mashed potatoes. A 5th identical bowl received only plain natural mashed potatoes. The colors were natural white, red, blue, green, and yellow. Each child was given a scoop of potatoes. Chloe did this experiment using 50 kindergarten students. 10 students were given each of the colors. She recorded the start and finish time of each student eating the potatoes and then calculated the difference in seconds. She did this over 5 days with each student getting each color. Multiple data takers (Chloe’s friends) made this experiment possible. What would be an appropriate hypothesis for this experiment? a Brightly colored mashed potatoes will be eaten quicker than non brightly colored mashed potatoes. b If you feed students mashed potatoes, then they will be happy. c If the color of mashed potatoes is bright, then students will eat them faster than normally colored mashed potatoes. d If the type of mashed potatoes looks normal, then students will eat them
Physics
1 answer:
Harrizon [31]3 years ago
6 0
A

The reason this is is because she the first sentence says that she believed that people would eat the mashed potatoes faster if they were brighter color.
You might be interested in
What is the relationship between mass and weight?
Vikentia [17]

Answer:

C. Weight is mass times the acceleration of gravity.

Explanation:

Weight is the force exerted by gravity.  Force is equal to mass times acceleration.

4 0
3 years ago
An iron block of mass 10 kg rests on a wooden plane inclined at 30° to the horizontal. It is found
Kaylis [27]

I assume the 100 N force is a pulling force directed up the incline.

The net forces on the block acting parallel and perpendicular to the incline are

∑ F[para] = 100 N - F[friction] = 0

∑ F[perp] = F[normal] - mg cos(30°) = 0

The friction in this case is the maximum static friction - the block is held at rest by static friction, and a minimum 100 N force is required to get the block to start sliding up the incline.

Then

F[friction] = 100 N

F[normal] = mg cos(30°) = (10 kg) (9.8 m/s²) cos(30°) ≈ 84.9 N

If µ is the coefficient of static friction, then

F[friction] = µ F[normal]

⇒   µ = (100 N) / (84.9 N) ≈ 1.2

5 0
2 years ago
A stone with a weight of 5.29 N is launched vertically from ground level with an initial speed of 26.0 m/s, and the air drag on
makkiz [27]

Answer:

a) 19.4 m/s

b) 19 m/s

Explanation:

a) In the given question,

the potential energy at the initial point = Ui = 0

the potential energy at the final point = Uf = mgh

the kinetic energy at the initial point = Ki = 1/2 mv₀².

the kinetic energy at the final point = Kf = 0

work done by air= Ea= fh =  0.262 N

Now, using the law of conservation of energy

initial energy= final energy

Ki +Ui = Kf + Uf +Ea

1/2 mv₀² + 0 = 0 + mgh + fh

1/2 mv₀² = mgh + fh

h = v₀²/ 2g (1 +f/w)

calculate m

m= w/g = 5.29 /9.8

= 0.54 kg

h = 20 ²/ (2 x9.80) x (1 0.265/5.29)

h = 19.4 m.

b) 1/2 mv² + 2fh = 1/2 mv₀²

Vg = 19 m/s

6 0
3 years ago
Zookeepers carry a stretcher that holds a sleeping lion. The total mass of the stretcher and lion is 175 kg. The lion's forward
ASHA 777 [7]

Answer:

350 N

Explanation:

Newton's second law:

∑F = ma

∑F = (175 kg) (2 m/s²)

∑F = 350 N

6 0
3 years ago
Which statement is true about tomato juice? A) It is an acid. B) It has a pH of 7.0. Eliminate C) It is strongly basic in nature
adoni [48]
The answer would be A. It is an acid.
7 0
3 years ago
Other questions:
  • Drag the words in the left-hand column to the appropriate blanks in the right-hand column. Reset Help Newton's first law of moti
    9·1 answer
  • In this formula, g=GM/R^2 , what do G ,m and R stand for?​
    5·1 answer
  • A block sliding along a horizontal frictionless surface with speed v collides with a spring and compresses it by 2.0 cm. What wi
    15·1 answer
  • Which instrument of the roman rupublic held the most power?​
    6·1 answer
  • A 40.0-$kg$ body is moving in the direction of the positive x axis with a speed of 238 $m/s$ when, owing to an internal explosio
    10·1 answer
  • Which statement best explains why electricity should be conserved?
    10·2 answers
  • 1. Speed is a measure of
    9·1 answer
  • Are these right? Just need you to confirm or tell we what I got wrong. Thanks​
    10·1 answer
  • Fig. 28-9 shows the cross-section of a hollow cylinder of inner radius a = 5 cm and outer radius b = 7 cm. A uniform current den
    7·1 answer
  • If a body is accelerating m change the velocity of 2 metre per second square when it was acted by five hundred Newton of force t
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!