What type of evidence is needed for a hypothesis to be supported or not supported?

O demonstrative evidence
O observational evidence
O physical evidence
O circumstantial evidence

Answer:

The girl exerts more pressure.

Explanation:

Pressure can be defined as the force exerted normally or perpendicularly per unit area.

i.e P = F/A

Girls

Area of the heel = 1cm² = 10^(-4) m²

Force = mg = 50 × 10 = 500N

Pressure =

[tex] \frac{500}{10 ^{ - 4} } [/tex]

[tex] = 5 \times {10}^{6}[/tex]

Elephant

Area = 250cm² = 2.5 x 10^(-2)b m²

Force = mg = 40000N

Pressure =

[tex] \frac{40000}{2.5 \times {10}^{ - 2} } [/tex]

[tex] = 1.6 \times {10}^{6} [/tex]

Answer:

42.5J/kgk

Just use the formula

C = Q/m x change in temp

Answer:

Often the independent variable is plotted on the x-axis - and example might be time (an experiment where time is measured by a watch or an independent mechanical device)

The dependent variable is often plotted on the y-axis - and example here might be the velocity or the acceleration,

It may be the responsibility of the experimenter to determine the value of the dependent variable by some type of measurement

Answer : 53.3 km/hr.

explanation

Answer:

if the distance between them is halved then gravitational force will be doubled....

Answer:

45/30

Explanation:

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Nikki has a momentum of 45 Kilogram meters per second and a mass of 30 Kilograms. then her velocity would be 1.5 meters per second

It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.

Mathematically the formula of the momentum is

P = mv

where P is the momentum of the particle

m is the mass of the particle

v is the velocity by which the particle is moving

As given in the problem Nikki has a momentum of 45 Kilogram meters per second and a mass of 30 Kilograms

P = 45 Kilogram meters per second

m = 30 Kilograms

By substituting the values of the momentum and the mass in the formula of the momentum

P = mv

45 = 30 ×v

v = 45/30 meters per seconds

v = 1.5 meters per seconds

Thus, Nikki weighs 30 kilograms and moves at a 45 kilogram per the second momentum. subsequently, her velocity would be 1.5 meters per second.

Learn more about momentum from here

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Answer:

Pressure is 1.96 × 10^12 Pa

Explanation:

[tex]{ \bf{pressure = \frac{force}{area} }}[/tex]

height = 4 cm = 0.04 m

density = 20 g/cm³ = 20,000 kg/m³

But for force:

[tex]{ \sf{force = mass \times acceleration}} \\ { \sf{force = ( \frac{density}{volume} ) \times acceleration}} \\ \\ { \sf{force = ( \frac{20000 }{0.04 {}^{3} }) \times 10 }} \\ \\ { \sf{force = 3.13 \times {10}^{9} \: newtons}}[/tex]

For area:

[tex]{ \sf{area = 0.04 \times 0.04 = 0.0016 \: m {}^{2} }}[/tex]

[tex] { \tt{pressure = \frac{3.13 \times {10}^{9} }{0.0016} }} \\ \\ = { \tt{1.96 \times {10}^{12} \: pascals}}[/tex]

please mark this answer as brainlist

a) Liters ... It COULD be.  The "Liter" is a perfectly good unit of volume, but it's typically used for liquids and gases, not solids.

b) Grams ... definitely NOT.  The "gram" is a unit of mass, not volume.

c) Cubic centimeters ... Yes. This is a unit of volume.

d) All of the above ... No.

The volume of solid is measured in

a) Litters

b) Grams

c) Cubic centimeters

d) All of the above

Answer:

200J

Explanation:

K.E=½mv²

K.E=½×16kg×5m/s²

K.E=8kg×25

K.E=200J

"Gamma rays" is the name that we call the shortest of all electromagnetic waves.  They're shorter than radio waves, microwaves, infrared waves, heat waves, visible light waves, ultraviolet waves, and X-rays.  They extend all the way down to waves that are as short as the distance across an atom.

Being so short, they carry lots of energy.  They can penetrate many materials, and they can damage living cells and DNA.  They're dangerous.

The sun puts out a lot of gamma radiation.  The atmosphere (air) filters out a lot of it, otherwise there couldn't even be any life on Earth.  

As soon as astronauts fly out of the atmosphere, they need a lot of shielding from gamma rays.

You know the precautions we take when we're around X-rays.  The same precautions apply around gamma rays, only a lot more so.

It's only in the past several years that we've learned how to MAKE gamma rays without blowing things up.  Also, how to control them, and how to use them for medical and industrial applications.

Explanation:

Gamma rays are ionizing electromagnetic radiation, observed by the decay of an atomic nucleus.

Uses of gamma rays :

Answer:

i hope it helped U

stay safe stay happy

Answer:

Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.

Answer:

1. it is universal means of communicating scientific information

2. meter

3. computer, internet, laboratory, and field

Answer:

analyze

Explanation:

Answer: Scientific theories are never proven.

Explanation:

Potential energy converts kinetic energy when the range is shifting from the S pole to the N pole.

If you like, I can put in more detail!

Explanation:

The correct answer is option B

Answer:

C. When ice melts, it absorbs energy.

Explanation:

When ice melts, it is getting hotter by absorbing energy and changes from a solid to a liquid. This is an endothermic reaction.

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

the real answer is

O metals and nonmetals, electrons transferrednonmetals and metals, electrons shared

Answer:

The larger the number of charges flowing through the wire,the larger is the current flowing in the wire.

Explanation:

if the wire is large then large amount of current flows through the circuit.but if the wire is small then a smaller amount of current will pass through.

I hope this helps

Answer:

Step 1. Make observations.

Step 2. Form a hypothesis.

Step 3. Make a prediction.

Step 4. Perform an experiment.

Step 5. Analyze the results of the experiment.

Step 6. Draw a conclusion.

Step 7. Report your results.

Explanation:

The first step in the Scientific Method is to make objective observations. These observations are based on specific events that have already happened and can be verified by others as true or false. Step 2. Form a hypothesis.

Our observations tell us about the past or the present. As scientists, we want to be able to predict future events. We must therefore use our ability to reason.

Scientists use their knowledge of past events to develop a general principle or explanation to help predict future events. The general principle is called a hypothesis. The type of reasoning involved is called inductive reasoning (deriving a generalization from specific details).

A hypothesis should have the following characteristics:

• It should be a general principle that holds across space and time

• It should be a tentative idea

• It should agree with available observations

• It should be kept as simple as possible.

• It should be testable and potentially falsifiable. In other words, there should be a

way to show the hypothesis is false; a way to disprove the hypothesis.

Some mammals have two hind limbs would be a useless hypothesis. There is no observation that would not fit this hypothesis!

All mammals have two hind limbs is a good hypothesis. We would look throughout the world at mammals. When we find whales, which have no hind limbs, we would have shown our hypothesis to be false; we have falsified the hypothesis.

When a hypothesis involves a cause-and-effect relationship, we state our hypothesis to indicate there is no effect. A hypothesis, which asserts no effect, is called a null hypothesis. For instance, the drug Celebra does not help relieve rheumatoid arthritis.

Religious customers seem to avoid their products because;

When selling a product to potential customers, the brand name of that product could affect sales negatively or positively.

Religious people do not view the devil in a positive manner because they believe that he is responsible for the suffering in the world.

The already existing bias they have in their minds about that name will make them reject any product bearing the name. They might even reason that this medicine will worsen their sickness. For this reason, the medicine called "Devil Red" will have a poor reception by religious people.

Summarily, religious people avid the medicine called Devil Red because they have a negative view of the devil.

Learn more about brand names here:

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Answer:

White light entering a prism is bent, or refracted, and the light separates into its constituent wavelengths. Each wavelength of light has a different colour and bends at a different angle. The colours of white light always emerge through a prism in the same order—red, orange, yellow, green, blue, indigo, and violet.

Answer:

A dog runs from his home & goes 400 m around the block before reaching back home. What is the dog's total distance & displacement?

Distance: 400 m & displacement:0m

Explanation:

Option B is the answer.

Hope it helps.

My answer is in the picture

Swipe the pictures to see the others

Answer:

D.

for the scalar product between two vectors to be 0 either one of thm is zero vector or they are perpendicular to each other

Answer:

kilo means 1000

2a. 0.1

b. 100

c.0.01

d. 0.001

3a.km

b.mL

d.cg

e.mm

g. g

h.kL

Answer:

The bonds can shift because valence electrons are held loosely and move freely.

Explanation:

Ill put the rest of the answers in the comments

Answer:

The bonds can shift because valence electrons are held loosely and more freely.