100 POINTS!! PLEASE DONT ANSWER UNLESS YOU KNOW BOTH ANSWERS PLEASE.

If a bike hits a rock and suddenly stops, the rider flies over the handlebars due to ________.
A. absolute zero B. displacement C. inertia D. electromagnetic spectrum

During a track meet, Sarah ran 400m in 80s. What was her average speed? (Remember s=d/t)

A. 5 m/s

B. 20 m/s

C. 15 m/s

D. 15 mph

Answers

Answer 1

Answer:

1. is B and 2. is A

Explanation:

Answer 2

Answer:

1. Displacement

2.  5 m/s  400 ÷ 80 = 5

Explanation:


Related Questions

Heat is: *
a Heat transfer by direct contact
b The total kinetic energy in a substance
c The transfer of thermal energy from one object to another
d Heat transfer by a fluid

Answers

[tex]⇒[/tex]

The total kinetic energy in a substance

Answer:

correct option b

that is the total kinetic energy in a substance

Question:

A second set of data was obtained using thicker pieces of putty. Both sets of results are shown in graph 2. What is the relationship between the resistance and the thickness of the conducting putty?

Answers

The resistance of the thin wire is greater than the resistance of the thick wire because the thin wire has fewer electrons to carry the current. Therefore, for thinner pieces of conducting putty we have the larger resistance and for the thicker pieces of conducting putty we have the lower resistance.

How far did Michael Phelps swim, if he swam at a speed of 10m/s in 30 seconds?

Answers

Answer:  his total speed would be 3 seconds

Explanation: because if you mulimply 10 x 3 you get 30 meaning that your answer would be 3

The sandbox of the previous exercises had 10kg of sand. It was initially at 15°C and the specific heat of this sand is 830 j/(kg°C). What will be the final temperature of the sand? (-8100J=|0kg)

Answers

Answer:

Sorry I need points [tex] \boxed{}[/tex]

A 4,000-kg wrecking ball is hoisted 20 m above Earth's surface. What will the wrecking ball's gravitational potential energy be?​

Answers

Answer:

784,000 J

Explanation:

The gravitational potential energy of a body can be found by using the formula

GPE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

From the question we have

GPE = 4000 × 9.8 × 20 = 784,000

We have the final answer as

784,000 J

Hope this helps you

In order for energy to be conserved during this process, a
must be released that has an energy of

Answers

Answer:

Mechanical energy :)

Explanation:

In order for energy to be conserved, the energy released must be equal to heat energy lost in the process.

What is principle of conservation energy?

The principle of conservation of energy states that, the total energy in a system is always conserved.

M = P.E + K.E

where;

P.E is the potential energyK.E is the kinetic energy

Thus, in order for energy to be conserved, the energy released must be equal to heat energy lost in the process.

Learn more about conservation of energy here: https://brainly.com/question/166559

Please help...
Describe energy transformations in your own words.

Answers

Energy transformations is a process of an energy form transforming into a new form of energy. Like thermal energy, mechanical, etc. An example; when we eat; it turns from chemical energy to mechanical or electrical to heat. Like a plug and to activate a toaster.

If the force exerted by the intern is doubled and the dis- tance is halved, does the work done by the intern increase, decrease, or remain the same?

Answers

If the force exerted by the intern is doubled and the distance is halved, the work done by the intern remains the same. Work done is the force applied to move a body through a distance.

Answer: Remains the same.

When a capacitor is charged, the electric field E, and hence the electric flux Φ, between the plates changes. This change in flux induces a magnetic field, according to Ampère's law as extended by Maxwell: ∮B⃗ ⋅dl⃗ =μ0(I+ϵ0dΦdt). You will calculate this magnetic field in the space between capacitor plates, where the electric flux changes but the conduction current I is zero. A parallel-plate capacitor of capacitance C with circular plates is charged by a constant current I. The radius a of the plates is much larger than the distance d between them, so fringing effects are negligible. Calculate B(r), the magnitude of the magnetic field inside the capacitor as a function of distance from the axis joining the center points of the circular plates. Express your answer in terms of μ0 and given quantities. B(r) =

Answers

The magnitude of the magnetic field B(r) inside the capacitor as a function of distance from the axis is [tex]\mathbf{B(r) =\dfrac{\mu_o I r}{2 \pi a^2} }[/tex]

A charged capacitor usually cause changes between the plates of electric field E and the electric flux Φ

As seen in Ampere's law which is extended by Maxwell:

[tex]\mathbf{\oint B^{\to} .dl^{\to} = \mu_o \Big( I+\dfrac{d \phi }{dt} \Big)}[/tex]

To meet the equilibrium equation of electric charge, Maxwell modified Ampere's law by incorporating the displacement current through into electric current component.

The displacement current can be expressed by the relation;

[tex]\mathbf{I = \varepsilon_o \dfrac{dE}{dt} }[/tex]

From the given information, the displacement current density through area A can now be expressed as:

[tex]\mathbf{I = \varepsilon_o A \dfrac{dE}{dt} }[/tex]

Replacing the value of displacement current density into Maxwell modified Ampere Law, we have:

[tex]\mathbf{\oint B .dl= \mu_o I_{enclosed} }[/tex]

[tex]\mathbf{B \times (2 \pi r) = \mu_o I\Big (\dfrac{\pi r^2}{\pi a^2} \Big) }[/tex]

[tex]\mathbf{B(r) =\dfrac{\mu_o I r}{2 \pi a^2} }[/tex]

Learn more about magnetic field here:

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See screen shot...momentum in collision

Answers

Please find attached photographs for your answer.

Hope it helps.

Do comment if you have any query.

Name three other objects around you now that are displaying a balanced force

Answers

Answer:

Examples of balanced forces

Resting against a wall.

Lying down.

Aircraft in a steady-flight.

Floating in water.

Standing in ground.

Tug of war equally balanced teams.

Fruit hanging from a tree.

Ball hanging from a rope.

Tommy, who has a mass of 30 kg, sits 4.0 meters from the center of a

merry-go-round that is rotating with a period of 10 seconds. What is the

centripetal force acting on Tommy?

Answers

Answer:

Fc= 47.363 N

Explanation:

First, you need tangential velocity because they don't give that to you in the problem.

So, the formula for tangential velocity is υ=2πr/t.

For this problem its v=2π4/10= 2.513 m/s

Then we plug this into our equation for centripetal force

Fc= 30*(2.513)^2/4=47.363 N

Fc=47.363 N

The centripetal force acting on Tommy is 47.36 N if Tommy, who has a mass of 30 kg, sits 4.0 meters from the center of a merry-go-round that is rotating for a period of 10 seconds.

What is mass?

A tangible body's mass is the amount of matter it possesses. It's also a metric of inertia or the resistance to velocity when a net force is exerted.

It is given that:

Tommy, who has a mass of 30 kg, sits 4.0 meters from the center of a merry-go-round that is rotating for a period of 10 seconds.

As we know the formula for the centripetal force:

Fc = mv²/r

m = 30 kg

r = 4 meters

First, find the tangential velocity:

The formula for tangential velocity is:

v = 2πr/t

v = 2π4/10

v = 2.513 m/s

Plug the values in the formula:

Fc= 30(2.513)²/4

Fc = 47.36 N

Thus, the centripetal force acting on Tommy is 47.36 N if Tommy, who has a mass of 30 kg, sits 4.0 meters from the center of a merry-go-round that is rotating for a period of 10 seconds.

Learn more about the mass here:

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A Particular roller coaster has a mass of 3500 kg, a height of 4.0 m, and a velocity of 12 m/s. What is the kinetic energy? If needed, use g = 10. m/s^2

Answers

Answer:

=252,000j

or 252j

Explanation:

i don't think 4.0 is supposed to be there

what is humidity??? ​

Answers

Answer:

presence of moisture in air

Humidity is the amount of water vapor in the air.

hope it helps you!!!!!!!!

What is the Scientific name for Ectoparasites?

Answers

Ectoparasites are a taxonomically diverse group of organisms that infest the skin of human beings and other animals. Ectoparasitic arthropods and nematodes are similar in that an individual organism can produce skin lesions that are large enough to see with the unaided eye. Ectoparasitic infestations are often intensely itchy, causing considerable annoyance and discomfort. These conditions are often focally hyperendemic in impoverished communities, with a particularly high prevalence in vulnerable families, households, and neighborhoods.

Pediculosis (infestation by head and body lice) and scabies are found to some degree in all human populations, but myiasis (fly larva infestation), tungiasis (sand flea disease), and cutaneous larva migrans occur mainly in tropical and subtropical environments. Except for body lice, the organisms discussed in this article are not vectors of pathogenic microorganisms. In other words, most ectoparasites do not carry disease-causing agents; they are, instead, the direct cause of disease. Mortality is low, but the cumulative morbidity from the direct discomfort, secondary bacterial infections, and sequelae of those infestations and infections is considerable.

Despite the abundant presence of ectoparasitic infestations across human populations, biomedical science lacks firm evidence-based practices to reliably control these organisms. In addition, head lice and scabies are developing resistance to some chemical compounds employed to treat infested individuals, prevent spread, and control outbreaks.

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Explain what matter is

Answers

Answer:

it doesnt matter

Explanation:

matter is what makes up everything around us; anything takin up space

Explanation:

matter can be defined as anything at all that has weight and occupies space

this is about the magnet fields. thanks in advance.​

Answers

The answer is A. The outer lines change as it moves

You need low pressure to walk on
snow and ice. True or faulse

Answers

Answer:

True

Explanation:

Answer: false please give brainliest

Explanation:  Reducing air pressure will not give you more traction and your tires could become seriously underinflated, affecting steering.

What is displacement

Answers

Answer:

the moving of something from its place or position

or

he occupation by a submerged body or part of a body of a volume which would otherwise be occupied by a fluid

There are 2 different definitions.

1. The moving of something from its place or position.

2. The occupation by a submerged body or part of a body of a volume which would otherwise be occupied by a fluid.

Explain Beryllium chloride molecule ( Formation of BF3 molecule and NH3 molecule )​

Answers

Answer:

Here it is!

Explanation:

BeCl2 referred to as Beryllium Chloride, is an inorganic compound. It appears as white or yellow crystal solid at room temperature. It can exist in both monomeric and 1-D polymeric forms. The properties of beryllium chloride are similar to aluminum chloride owing to the diagonal relationship of beryllium with aluminum.

The molar mass and melting point of beryllium chloride are 79.91 g/mol and 399 °C, respectively. The chemical bonding in Beryllium Chloride is studied by writing down its Lewis structure by following the Lewis approach.

After lewis structure, there is a need of understanding its molecular geometry and hybridization of the central atom, Beryllium. The molecular orbital (MO) theory will be used to understand the MO diagram of beryllium chloride.

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Answer:

Beryllium Chloride

[tex]{ \boxed{ \mathfrak{formula : \: { \rm{BeCl _{2} }}}}}[/tex]

Beryllium chloride is formed through ionic / electro-valent bonding. The beryllium atom loses its two valency electrons to the two chlorine atoms each with seven outermost electrons.

As a result, an ionic compound Beryllium chloride is formed.

Boron Fluoride (BF3)

Boron trifluoride is formed through interaction of π bonds with the double alpha bonds of fluorine.

From VESPR, the structure is tetrahedral and non-symmetrical hence polarity is high.

Since, fluorine is highly electronegative, it makes the bond polar

All in all, Boron Fluoride is formed through hybridization.

Ammonia (NH3)

Ammonia is formed through hydrogen bonding.

Hydrogen bonding is a covalent bonding situation where hydrogen bonds with a highly electronegative element such as oxygen, fluorine, nitrogen.

Do I add squared or not?​

Answers

Answer: add it

Explanation:

Lichens are not single organisms, but algae and fungi that function together. The algae use photosynthesis to make food for both organisms. The fungi produce digestive chemicals and absorb nutrients for both organisms.

How does the biological activity of lichens cause weathering in rocks?
Answer options with 4 options
A.
Lichens cause friction as they grow, which weathers the rocks.
B.
Lichens produce chemicals, which dissolve and weather the rocks.
C.
Lichens take in water, which freezes in cracks and weathers the rocks.
D.
Lichens absorb heat during photosynthesis, which weathers the rocks.

Answers

Answer:

THE ANSWER IS B.

Explanation:

Un bloque de cobre cuya masa es 250 gramos , absorbe calor y su temperatura se eleva de 20 ˚C a 150 `C. ¿Cuál es la cantidad de calor absorbida por el bloque de cobre?. Expresar el resultado en unidades caloríficas y en unidades mecánicas.

Answers

Dada la información de la pregunta, el calor absorbido por el cobre es de 12513 J o 2990 calorías.

El calor ganado se obtiene de la relación;

H = mcdt

Dónde;

H = calor absorbido

m = masa

c = capacidad calorífica del cobre

Δt = cambio de temperatura

La capacidad calorífica del cobre es de 385 J / kg / ° C

Entonces;

m = 250 gramos o 0,25 kg

Δt = 150 ° C - 20 ˚C = 130 ˚C

H = 0,25 kg * 385 J / kg / ° C * 130 ˚C

H = 12513 J o 2990 calorías

Más información: https://brainly.com/question/6505878

why is the answer A and not C?
please help!​

Answers

Answer:

because it gives a complete thought

solve by formulae method and completing the square method. 4x²-29x+7=0​

Answers

X1=1/4
X2=7
Hope it helps

Answer:

(4x - 1) (x - 7)

Explanation:

4x^2 - 29x + 7 = 0

(4*-7=-28) and: (1*- 1 = -1)

-28 - 1 = -29 and - 1 times -7 = 7

Consider the following arrangement with a frictionless/massless pulley. Determine the force F required to move block A if the coefficient of static friction between block A and the floor is 0.35 and the coefficient of static friction between block A and block B is 0.25

Answers

Answer: The free - body diagrams for blocks A and B. frictionless surface by a constant horizontal force F = 100 N. Find the tension in the cord between the 5 kg and 10 kg blocks. The string that attaches it to the block of mass M2 passes over a frictionless pulley of negligible mass. The coefficient of kinetic friction Hk between M.

Explanation: Hope this helped :)

¿Cuál es el parámetro que indica la cantidad de energía liberada en un movimiento sísmico?

Answers

Answer:

Explanation:

en un movimiento sísmico?

What distance does a police car travel if it is going 3.0 m/s for 20 seconds

Answers

Answer:

60 meters

Explanation:

If you are going 3 meters in a second, and you are traveling for 20 seconds, you have to multiply

3meters/second*20seconds

cross out the seconds and you have

3 meters*20

60 meters

A person travels from C to D. One third of the time travels at v1 = 42km/h, the rest of the time travels at v2 = 36km/h. Find his average speed as he travels from C to D.

Answers

Answer:39km/h

Explanation:we know V=(u+v)/2. Here is u=42 and v=36

Select the correct answer.

Planet A Planet B
Distance from Sun 0.72 AU 9.54 AU
Planet composition rocky mantle, iron core hydrogen, helium
Gases in atmosphere very dense atmosphere that is 96.5% poisonous carbon dioxide and 3.5% nitrogen mostly hydrogen and helium
Number of moons 0 62
Rings no rings visible rings
Which planet is planet A?

A.
Mars
B.
Saturn
C.
Uranus
D.
Venus

Answers

Answer:

D, Venus

Explanation:

Using the facts

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