Một chất điểm dao động điều hoà theo phương trình x = 5cos(2πt)cm, chu kì dao động của chất
điểm là
A. 1s. B. 2s. C. 0,5s. D. 10s.

Answers

Answer 1

Answer:

D. is the answer trust me:))))


Related Questions

The period of rotation of Mars is 1 day and 37 minutes. Determine its frequency of rotation in Hertz.

Answers

The frequency of rotation of Mars is 0.0000113 Hertz.

Given the following data:

Period = 1 day and 37 minutes.

To find the frequency of rotation in Hertz:

First of all, we would convert the the value of period in days and minutes to seconds because the period of oscillation of a physical object is measured in seconds.

Conversion:

1 day = 24 hours

24 hours to minutes = [tex]60[/tex] × [tex]24[/tex] = [tex]1440[/tex] minutes

[tex]1440 + 37 = 1477 \; minutes[/tex]

1 minute = 60 seconds

1477 minute = X seconds

Cross-multiplying, we have:

[tex]X = 60[/tex] × [tex]1477[/tex]

X = 88620 seconds

Now, we can find the frequency of rotation of Mars by using the formula:

[tex]Frequency = \frac{1}{Period}\\\\Frequency = \frac{1}{88620}[/tex]

Frequency of rotation = 0.0000113 Hertz

Therefore, the frequency of rotation of Mars is 0.0000113 Hertz.

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In an electrostatic field, path 1 between points A and B is twice as long as path 2. The electrostatic work done on a negatively charged particle that moves from A to B along path 1 is W1.

How much work is done on this particle if it later goes from A to B along path 2? Express your answer in terms of W1.

W2=??​

Answers

Answer:

W2 = W1

Explanation:

work is independent of the path taken between the points.

Which area of study involves how mechanics and motion affect sports performance?
1.) Momentum. 2.) Velocity. 3.) Biomechanics. 4. )Centripetal force.

Answers

Answer:

biomechanics

Explanation:

Biomechanics is part of the larger field of kinesiology, specifically focusing on the mechanics of the movement. 1 It is both a basic and applied science, encompassing research and practical use of its findings.

Which statement best explains how a planet affects the orbit of a comet as the comet passes by the planet?

Answers

Comets orbit the sun just like planets do. Except a comet usually has a very elongated orbit. Thanks to the laws of gravity comets obey the same laws. A comets orbit takes it very close to the sun and then far away again.

Select the correct answer.
What does the expression “75 meters per second southeast” best describe?
A.
acceleration
B.
distance
C.
speed
D.
velocity

Answers

Answer:

my answer would be A I'm not sure about that

Answer: The answer would be D. Velocity

Explanation: Velocity is measured in meters per second.

A grand prix racing car has an average lap speed of 180km/h.Each lap is 4.5 km. How many laps will it complete in 1.5 hours​

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

Lap speed = 180 km/h

Each lap is about 4.5 km

So, number of laps it will complete in 1.5 hour :

[tex] \dfrac{180}{4.5} \times 1.5[/tex]

[tex] \dfrac{180}{3} [/tex]

[tex]60 \: \: laps[/tex]

31) what is the energy required to change 20g of copper, whose specific heat is 0.39j/gc,
change from 20 to 40 degrees?

Answers

Explanation:

given :

m = 20 g

sh = 0.39 J/g°C

∆T = 40-20 = 20°C

Find the Energy!

solution :

E =m. sh. ∆T

= 20 × 0.39 × 20

= 156 J

♪Answer : mass = 20g sh = 0.39j/g°c∆T = 40° - 20° = 20°

So, energy required is

Energy = mass*sh*∆T

Energy = 20g*0.39j/g°c*20°

Energy = 156joule

~Physics#1

What is the Normal CSF for:

Leukocytes (per mm³)

% Neutrohils

Glucose (mg/dL)

Protein (mg/dL)

Please provide source if possible.

Answers

1. 5 WBC's per cubic millimeter.

3. 50 to 80 mg/100 mL

4. 15 to 60 milligrams per deciliter (mg/dL) or 0.15 to 0.6 milligrams per milliliter (mg/mL)

If a test were to be performed here are normal results:

Normal values typically range as follows:

Pressure: 70 to 180 mm H2O

Appearance: clear, colorless

CSF total protein: 15 to 60 mg/100 mL

Gamma globulin: 3% to 12% of the total protein

CSF glucose: 50 to 80 mg/100 mL (or greater than two thirds of blood sugar level)

CSF cell count: 0 to 5 white blood cells (all mononuclear), and no red blood cells

Chloride: 110 to 125 mEq/L

(Source: https://medlineplus.gov/ency/article/003428.htm)

Someone pls help I don’t understand this

Answers

Answer:

[tex]{ \rm{F _{ball \: on \: bat} = - F _{bat \: on \: ball} }}[/tex]

Explanation:

• This is due to the third newtons law of motion which states that "Every action has an equal and opposite reaction".

a stone is dropped down an empty mine shaft. it takes 3 seconds to reach the bottom. assuming that the stone falls from rest and accelerates at 10m/s^2, calculate.
a) the maximum speed reached by the stone before hitting the bottom.
b) the average speed of the stone in flight.
c) the depth of the mine shaft.

Answers

Answer:

I think A. I had a similar question

Explanation:

• An artery in a certain patient has been reduced to half its original inner diameter by bad cholesterol deposits on the inner artery wall. By what factor will the blood flow through the artery be reduced if the pressure differential across the artery has remained unchanged? (a) 0.065 (b) 0.625 (c) 0.622 (d) 0.0625 ​

Answers

Answer:

C.

Hope it's helpful

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What is the acceleration of a car that maintains a constant velocity of 24 m/s for 10 seconds?

a.
24 m/s2

b.
240 m/s2

c.
2.4 m/s2

d.
0 m/s2

Answers

djdjdjdjdjdjdjdjd ddsdds

what is the force the when does when Gravity pushes you​

Answers

Answer:

Image result for what is the force the when does when Gravity pushes you​

The important thing to remember is that gravity is neither a push nor a pull; what we interpret as a “force” or the acceleration due to gravity is actually the curvature of space and time — the path itself stoops downward.

Explanation:

Image result for what is the force the when does when Gravity pushes you​

The important thing to remember is that gravity is neither a push nor a pull; what we interpret as a “force” or the acceleration due to gravity is actually the curvature of space and time — the path itself stoops downward.

Answer:

It is called gravitational force.

Explanation:

[tex]{ \boxed{ \rm{F = \frac{GM_{a} m _{a}}{ {r}^{2} } }}}[/tex]

F is the gravitational forceMa is the mass of a planetary bodyma is mass lf body being attractedr is the separation distanceG is the universal gravitational constant

→ Assume you are in space and you have a mass of ma, and you are r metres from the Earth of mass Ma. The force F will be experienced and you will tend to be pulled towards the Earth when you are in its gravitational field.

If the ambient temp. is 75 F, what is it Centigrade?

Answers

Explanation:

We know

C/5 = F -32/9C/5 = 75 -32/9C/5 = 43/9C ≈ 25°C

The mass of an object is 100mg. What is the object's mass in kg? Show your work

Answers

Answer:

0.0001 kg

Explanation:

The weight in Kilograms is equal to the milligrams divided by 1,000,000.

100 ÷ 1,000,000

PLEASE HELP ASAPPPPPPPPPPPPPPPPPPP

Answers

Answer:

Basketball

Explanation:

Im asuming basketball because a basketball has the least movement out of the rest of the answers.

in loading a long lorry a man lifts boxes each of weight 100N and height of 1.5M.how much energy is transfered when one box is lifted​

Answers

Explanation:

energy=100×1.5=150 joules

A golf ball is hit with an initial velocity of 20m/s at an angle of 30° to the horizontal. calculate;

the time of flight​

Answers

Answer:

tcucugxojfjgfojcigxuogoudyifodtufukdutfuocyjxuogu

In the free-body diagram, the magnitude of the normal force is 40 N, the friction force is
25N, the net force is 80N: What is the magnitude of the applied force?

Answers

Answer:

Explanation:

F = 80 + 25 = 105 N

help me besties ok thx

Answers

Answer:

[tex]1 \\ 0.5 \times 500 \times 20 \times 20 \\ \ 2 \\ 0.5 \times 0.6 \times 100 \times 100 \\ 3 \\ 1000 \times 0.5 \times 10 \times 10 \\ 1000 \times 0.5 \times 20 \times 20 \\ 1000 \times 0.5 \times 30 \times 30 \\ 4 \\ 0.5 \times 40000 \times 30 \times 30 \\ 5 \\ \sqrt{ \frac{2}{0.1 \times 0.5} } [/tex]

Two rowboats on a lake are lined up, in contact, front to back in the same direction. A passenger in the rear boat pushes the front boat directly forward with a force of 40 N.
How much force does the front boat exert on the rear boat?

A. 0N
B. 20N
C. 40N
D. 80N

Answers

The answer is C. 40N.

!!! , ? ? ? (no silly answers please).

Answers

Answer:

hellooo

Explanation:

i think ummm

. . .

…,,,???!!! I am confused. What?

TRUE OR FALSE The sun has more gravity than the earth because it is more massive.

Answers

It’s true now say thank you

A ball is thrown at a speed of 40m/s. If the ball has a mass of 0.33kg, what is the ball’s momentum?

Answers

Answer:63745.6573

Explanation:

Some thermal mugs have layers of materials to keep drinks hot for as long as possible. Which combination of layers would work best for this purpose? A. Inner core of steel, no air gap, outer layer of glass B. Inner core of steel, air gap, outer layer of plastic C. inner core of steel no air gap outer layer of glass D inner core of steel no air gap outer layer of plastic

DONT ANSWER IF U DONT KNOW DO NOT GUESS THIS IS FOR A GRADE

Answers

The best combination of layers that would work best for this purpose is an inner core of steel, no air gap, and an outer layer of glass. Option A is correct.

Thermal mugs have the ability to maintain the internal body temperature and heat of their container. For the heat to be maintained for an extended period of time. The internal core must be lined with steel because it radiates less heat compared to the glass. The steel also has high conductivity and lesser specific heat to keep drinks hot for a long period of time.

Therefore, we can conclude that for thermal mugs to keep drinks hot for as long as possible, the inner core must be lined with steel, no air gap, and contain an outer layer of glass.

Learn more about thermal conductivity here:

https://brainly.com/question/7643131?referrer=searchResults

Answer:

A

Explanation:

On a hike you walk 5000 m east, 3000 m north and 1000 m west at a constant speed of 1m/s calculate your velocity

Answers

Answer:

0.44 EST + 0.33 NTH

Explanation:

if this is incorrect and brainly removes the comments to try and sabotage you guys please report this for the sake of learning

A plane moves 599 m northeast along a runway.
If the northern component of this displacement
is 89 m, how large is the eastern component?

Answers

The eastern component of the plane's displacement is 592.35 m.

The given parameters;

the resultant of the plane displacement = 599 mthe northern component of this displacement, Y = 89 mLet the eastern component of this displacement = X

The eastern component of the plane's displacement is calculated by applying Pythagoras theorem as follows;

X²  + Y² = 599²

X² + 89² = 599²

X² = 599²  - 89²

X² = 350880

X = √350880

X = 592.35 m

Thus, the eastern component of the plane's displacement is 592.35 m

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draw the diagram of third class lever showing fulcrum, effort and load​

Answers

Answer:

In a third class lever, the effort is located between the load and the fulcrum. If the fulcrum is closer to the load, then less effort is needed to move the load. If the fulcrum is closer to the effort, then the load will move a greater distance. ... These levers are useful for making precise movements.

How strong is a neutron star's gravity.

Answers

Answer:

About a thousand billion times! Because neutron stars are so dense, they have intense gravitational and magnetic fields. The gravity of a neutron star is about a thousand billion times stronger than that of the Earth. Thus the surface of a neutron star is exceedingly smooth; gravity does not permit anything tall to exist.

It's crazy strong.

1. A 6-volt battery produces a current of 0.5 amps. What is the power in the circuit?

Answers

Answer:

hope this will help you

have a great day

Explanation:

please mark me as the brainliest

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