PHYSICS MIDDLE SCHOOL

Choose all the answers that apply. In pea plants, round seeds are dominant over wrinkled seeds. If two hybrids (Rr) are crossed: 50 percent will be Rr
25 percent will have round seeds
25 percent will have wrinkled seeds
1/4 will have round seeds
3/4 will have the same phenotype


I REALLY NEED HELP PLEASE

Answers

Answer 1
Answer:

50 percent will be Rr

25 percent will have wrinkled seeds

The following information should be considered:

  • In the case when there is peaplants, roundseeds are dominant over wrinkled seeds.
  • So at the time of two hybrids are crossed so there should be 50% as Rr and  25% should be wrinkled seeds.

learn more: brainly.com/question/18269454?referrer=searchResults
Answer 2
Answer: Correct answers:

50 percent will be Rr
25 percent will have wrinkled seeds

    | R  |   r
----------------
R | RR| Rr
---|------------
r  |  Rr |  rr

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Mass = 567.5 g Volume = 50.0 cm3 What is the density of lead? 1.135 g/cm3 11.35 g/cm3 113.5 g/cm3 1,135 g/cm3

Answers

Density = mass / volumeSo density =567.5/50 = 11.35 g/cm3.

Answer:

b

Explanation:

The weather patterns seen on Earth are influenced greatly by the

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Answer:

cycling of water in and out of the atmosphere.

Explanation:
the answer is the moon and the earths gravitational force. 

a 63 kg object needs to be lifted 7 meters in a matter of 5 seconds. approximately how much horsepower is required to achieve this task

Answers

Power is defined as the rate of doing work or the work per unit of time. The first step to solve this problem is by calculating the work which can be determined by the equation:

W = Fd

where:

F = force exerted = ma
d = distance traveled
m = mass of object
a = acceleration

Acceleration is equivalent to the gravitational constant (9.81 m/s^2) if the force exerted has a vertical direction such as lifting.

W = Fd = mad = 63(9.81)(7) = 4326.21 Joules

Now that we have work, we can calculate power.

P = W/t = 4325.21 J / 5 seconds = 865.242 J/s or watts

Convert watts to horsepower (1 hp = 745.7 watts)

P = 865.242 watts (1hp/745.7 watts) = 1.16 hp

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Explain the energy transformations necessary for turning on a Chromebook. Your description should have at least three types of energy being described.You may want to talk about the different parts of the Chromebook,such as:

Plug
Battery
Light

PLZ HELP THIS IS DUE TODAY!!

Answers

Answer:

First, you need to charge the battery.

You do this by connecting the device to the electricity, in this way you can store the energy, that comes in form of electric energy, in the battery, that stores the energy in form of chemical energy.

When you push the "ON" button, the energy stored in the battery starts to run in the device, in form of electrical energy, in this way it reaches all the components and the computer is fully turned on.

At this moment the Chromebook turns on its screen, producing luminous energy (so consumes the electric energy that comes from the battery, and turns it into luminous energy).

There are other transformations, for example, in the cooler (the small fan inside the device) there is a transformation from electrical energy to mechanical energy (because the fan is rotating now).

Explain how we were able to boil water at room temperature

Answers

Answer:

put water at room temperature into a vacuum chamber and begin removing the air. Eventually, the boiling temperature will fall below the water temperature and boiling will begin without heating.

As the mass and volume increases, the densit will
Increase, decrease, or remain the same

Answers

We can't tell from the information given.

Density is the RATIO of mass to volume.  So, if mass and volume both
increase but their ratio decreases, then the density decreases.

But if mass and volume both increase and their ratio also increases,
then the density increases.

Examples:

-- Start with a pile of some kind of substance.
    Mass = 150 grams
    Volume = 100 cm³

    Density = (mass) / (volume) = (150 gm)/(100cm³)  =  1.5 gm/cm³

-- Add 50 grams of mass.  Mass = 200 gm.
    Add 50 cm³ of volume.  Volume = 150cm³.

     Density = (mass) / (volume) = (200 gm)/(150 cm³)  =  1.33 gm/cm³.
                                                                                  Density decreased.

-- To the original pile, add 100 grams of mass.  Mass = 250 gm.
                               add 50 cm³ of volume.  Volume= 150 cm³.

     Density = (mass) / (volume) = (250 gm)/(150 cm³)  =  1.67 gm/cm³.
                                                                            Density increased.

-- To the original pile, add 60 grams of mass.  Mass = 210 gm.
                               add 40 cm³ of volume.  Volume = 140 cm³.

   Density = (mass) / (volume) = (210 gm)/(140 cm³)  =  1.5 gm/cm³.
                                                                         Density no change.
                                                                 Same as the original pile.
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