What is the wavelength of a 147-g baseball traveling at 91.0 mph?

Answers

Answer 1

Answer:

The formula to determine the wavelength is, De-Broglie wavelength formula:

$\lambda =(h)/(mv)$ -(1)

where, $\lambda$ is wavelength, m is mass, v is velocity and h is Planck's constant = $6.63* 10^(-34) Js$ = $6.63* 10^(-34) kgm^(2)s^(-1)$

mass, m = 147 g (given)

Since, 1 g = 0.001 kg

So, 147 g = 0.147 kg

v = 91.0 mph (given)

Converting mph to mps:

Since, $1 mph = (1.609* 10^(3) ms^(-1))/(60* 60)$

So, $90 mph = (91* 1.609* 10^(3) ms^(-1))/(60* 60)$ = $40.67 ms^(-1)$

Substituting the values in formula 1:

$\lambda =(6.63* 10^(-34) kgm^(2)s^(-1))/(0.147 kg* 40.67 ms^(-1))$

$\lambda =1.11* 10^(-34) m$

Hence, the wavelength wavelength of a 147-g baseball traveling at 91.0 mph is

$1.11* 10^(-34) m$ .

Answer 2

Answer:

Answer: its D

Explanation:

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Which of the following describes electron sharing between two oxygen atoms.A)Each Oxygen shares 6 electrons with the other
B)Each Oxygen shares 2 electrons with the other
C)Each Oxygen shares 8 electrons with the other
D)Each Oxygen shares 1 electrons with the other

Answers

Option B because the electron sharing between two oxygen atoms would be that each oxygen shares two electrons with the other.

Please help i will give you 50 points what is the density of a book whose mass is 1,800 g and whose volume is 300 cm2

what is the mass of a ball whose density is 0.250 g/cm3 and whose is 200 cm3

Answers

Answer : The density of book is $6g/cm^3$

The mass of a ball is, 50 grams.

Explanation :

Part 1 :

Density : It is defined as the mass contained per unit volume.

Formula used :

$Density=(Mass)/(Volume)$

Given :

Mass = 1800 g

Volume = $300cm^3$

Now put all the given values in the above formula, we get :

$Density=(1800g)/(300cm^3)=6g/cm^3$

Therefore, the density of book is $6g/cm^3$

Part 2 :

Formula used :

$Density=(Mass)/(Volume)$

Given :

Volume = $200cm^3$

Density = $0.250g/cm^3$

Now put all the given values in the above formula, we get :

$0.250g/cm^3=(Mass)/(200cm^3)$

$Mass=0.250g/cm^3* 200cm^3=50g$

Therefore, the mass of a ball is 50 grams.

Answer: For your first question about the book, the answer is 6 g/cm^3. For the ball, your mass is 50 grams.

Explanation: density = mass/volume; for example: your book was 1,800 g. Divide that by 300 cm^3 to get 6g/cm^3. For the ball, mass = density*volume, so you need to multiply .250 by 200 cm^3

Which of the following best defines homeostasis?Forming identical cells
Breaking down glucose
Maintaining stable internal conditions
Increasing an organism's temperature

Answers

the third one i did the test

Maintaining stable internal conditions

What is water displacement?????

Answers

When you put an object in water it moved the water to make room for itself. It is used to measure

Water displacement was discovered by the Greek thinker Archimedes in the 3rd century BC. He worked out that if you put an object in water, the amount of water displaced (thrown out) is equal to the volume of that object. By measuring the overflow of water, you can work out the volume of the object (it only really works if the object is non-porous/ can't soak up the water. In fluid mechanics, displacement occurs when an object is immersed in a fluid, pushing it out of the way and taking its place. The volume of the fluid is displaced can then be measured.

after a fire, the ashes have less mass and take up less space than the trees and vegataion before the fire. how can this be explained in terms of the Law of Conservation of mass?

Answers

Fire expends ENERGY which is a by-product of conversion of matter.

The calories or therms of a fire equal a certain amount of mass.

When MATTER (Electron) and ANTI-MATTER (Positron) collide they don't inhillate each other with nothingness, they always realse TWO gamma particles.

The ENERGY of the TWO gamma particles CONSERVES the MASS of the ELECTRON and The POSITRON

This is what Einstein meant by E=mc2

ENERGY has physical properties than can be measured.

These properties equal the mass that no longer exists after you measure the mass BEFORE and AFTER

The AFTER MASS + the ENERGY MUST equal the BEFORE MASS to at least 99.999%

You must take heat, light and other PARTICLES into consideration.

Their MASS plus their ENERGY

Answer:

this can be explained in terms of the Law of Conservation of mass because you just have to multiply the number of amount that was lost during the fire by 5

Explanation:

so if they lost 489 miles of mass from the fire, then u will have to multiply 489 by 5. 489x5=2445

How many hydrogen atoms are in CH2OH?

a-10
b-3
c-5
d-4

Answers

Answer:

B)3

Explanation:

I'm assuming the 2 is meant to be smaller. If it were a regular size 2 the answer would be 2 and that isn't an option

The answer is B. 3 because H2 plus H1 is 3 hydrogen

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