Physics High School

a bicyclist travels with an average velocity of 15km/h north, for 20 minutes .what is his displacement ? ​

Answers

Answer 1

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

Displacement is equal to ~

[tex]5 \: \: km[/tex]

See the attachment for solution ~

A Bicyclist Travels With An Average Velocity Of 15km/h North, For 20 Minutes .what Is His Displacement
Answer 2

Answer:

It is 24000meter per second

Related Questions

__________ is an example of a directional research hypothesis.

Answers

Answer:

Directional hypothesis is an example of a directional research hypothesis.

Explanation:

Directional hypothesis: A directional (or one tailed hypothesis) states which way you think the results are going to go, for example in an experimental study we might say…”Participants who have been deprived of sleep for 24 hours will have more cold symptoms in the following week after exposure to a virus than

what is the smallest possible value for the index of refraction?

Answers

Answer:

1.0

Explanation:

The smallest possible value for the index of refraction is 1.0.

What is Index of refraction?

This talks about how fast light travels through an object by taking note of how much the light is bent, or refracted, as it enters into the material.

The smallest possible value for the index of refraction is 1.0 because the speed of light in any medium is always less than than the speed of light in air or vacuum.

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NEED HELP!!! IF YOU ANSWER ALL QUESTIONS I WILL GIVE YOU BRAINEST!!!!! 15 POINTS!!!!

1. Tracking your exercise can help you stick with an exercise routine.
A.
True
B.
False

2. Lola is trying to be healthier, so she has been doing a lot of weight lifting. She can tell that she is really starting to build more muscle. If she is working her muscles, does she need to be concerned about flexibility?
A.
No, any kind of muscle work gets the job done.
B.
Yes, it is best to do as many different kinds of exercise as possible.
C.
Yes, flexibility is a different and important way of working muscle.
D.
No, most people are naturally flexible without much additional work.

3. Many sports that do not explicitly depend on strength work weightlifting into their practices. Why is this a good idea?
A.
Weightlifting is a traditional form of exercise.
B.
Building muscle strength helps with all aspects of fitness.
C.
There are very few ways to build muscles other than weightlifting.
D.
Sports can change their rules and require more strength from athletes.

4. Marina comes from a family with a lot of heart disease. She knows that she will have to go out of her way to make sure that her heart stays strong and healthy. What would be the BEST exercise to achieve this goal?
A.
yoga
B.
bowling
C.
swimming
D.
weightlifting

PLEASE NO LINKS!!!

Answers

Answer:

1.A

2.C

3.B

4. i.dk about that one

Explanation:

1. It is true that Tracking your exercise can help you stick with an exercise routine.

2. Yes, it is best to do as many different kinds of exercise as possible.

3. Building muscle strength helps with all aspects of fitness

4. Yoga would be the best exercise to achieve this goal.

What is exercise?

Exercise is any activity that utilizes the physical movements of the body that improves a people's health, endurance, and wellbeing while lowering their chance of contracting illnesses. It enables the person to keep their body weight in a healthy weight range.

The benefits of fitness fluctuate depending on the sort of dying a person experiences. Even if a muscle is stretched, excessive sitting can cause a number of illnesses, many of which are fatal. The individual should engage in mobility activities as well as exercising to improve their stamina.

Thus, exercise is very necessary for health.

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As shown in the diagram, an inflated balloon released from rest moves horizontally with velocity "v". The velocity of the balloon is most likely caused by ______

Answers

Answer:

Action reaction

Explanation:

The velocity of the balloon caused by "Action-reaction ".

Whenever the two bodies or objects contact, Newton's third law stipulates that pressures of similar magnitude as well as having opposite directions are applied to each other as well.These same two forces, which seem to be comparable in magnitude as well as opposite throughout the direction, generate an interactions combination on multiple objects.

Thus the response above is correct.

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The length of a rectangle plus its width is 52 cm. The area is 672 square cm. What are the length and width of the rectangle?

Answers

Answer:

technically nfrbhrbbrbbf but also the skier can hurt himself if he speeds up

Explanation:

need points so plz like it

Answer:

Lenght= 12.92cm

Width= 52cm

If a plane travels 800 m south & 1500 m east, what is its distance &

displacement?

Answers

Answer:

2300 because 800 + 1500=2300

Andy took a bus and then walked from his home to downtown. For the first 1.6 hour, the bus drove at an average speed of (15km)/(h). For the next 0.4 hours, he walked at an average speed of (4.5km)/(h). What was the average speed for the whole journey?

Answers

Answer:

240

Explanation:

Show the work please and thank you!

Answers

Answer:

Explanation:

60 times 5=300+24=324

207/324= aveage i dont have a calculator

use the average and mutiple by 88 minutes

how can you reduce the percentage uncertainty in measurements that you make?​

Answers

You can make sure by measuring it more than once to make sure it is correct and make sure that you measure from the right points

what is the standard measurement system used by scientists around the world?

Answers

Answer:

Hey mate....

Explanation:

This is ur answer....

The International System of Units (SI), commonly known as the metric system, is the international standard for measurement.

Hope it helps!

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International system of units.French système international d'Unitès, international decimal system of weights and measures derived from and extending the metric system of units.Adopted by the 11th General conference on weights and measures (CGPM) in 1960, It is abbreviated SI in all languages.

Convert: 8 mm: ____________ cm

Answers

-1^10

centi=10 mm and mm=1/10=10^-1 cm

Multiples of the fundamental frequency created by plucking a string very quickly, several times in a row is called__________.

a.
pitch
c.
scales
b.
overtones
d.
percussion

Answers

Answer:

overtones

Explanation:

Determine your mass in kg noting that 1 kg is about 2.2 lbs. Then use Fg = mg to find your weight in Newtons.

Answers

Answer: see example due to variation of factor

Explanation:    w = m x g

Weight= Mass (in kg) x Gravity (9.8m/s)

To get to kg from lbs take your weight divide by 2.2lbs well get you to kg

Example

Let's say a boy weighs 145lbs

145kg/2.2lbs=66kg

Now we use the equation

w=m x g

65kg*9.81m/s=637.65N

I need help asap I would be happy if you helped me
assuming air resistance is negligible, how fast would ball be travelling as it hits the floor after free-falling from rest for 5 second​

Answers

vf=gt so 9.8•5=49m/s

A book is to be produced with pages of thickness 0.125mm.If the book is to be exactly 1cm thick what is the maximum number of pages it can contain?​

Answers

Answer:

1cm=10mm

10cm/0.125mm

80pages

Answer the question below and show all work.

Answers

Answer:

Explanation:7

A cheetah running initially at a velocity of 20 m/s accelerates
uniformly at 3.0 m/s. The velocity of the cheetah will be
m/s after 4.0 seconds.

Answers

Answer: I think it’s 32 m/s

Explanation: Vi=20 m/s

Vf=?

a=3.0 m/s^2

t= 4s

Vf= Vi + at

Vf= 20 m/s + (3 m/s^2)(4s)

Vf= 20 m/s + 12m/s

Vf= 32m/s

If A cheetah running initially at a velocity of 20 m/s accelerates

uniformly at 3.0 m/s2. The velocity of the cheetah after 4.0 seconds will be 32 m/s.

To find the velocity of the cheetah after some time we can use the formula:

v = u + at

where:

v = final velocity

u = initial velocity

a = acceleration

t = time

Given:

Initial velocity (u) = 20 m/s

Acceleration (a) = 3.0 m/s²

Time (t) = 4.0 seconds

now we can put values in eq.

v = 20 m/s + (3.0 m/s²) * 4.0 s

v = 20 m/s + 12 m/s

v = 32 m/s

so the answer is 32 m/s.

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stephen schwartz created the musical godspell as well as __________.

Answers

Answer:

Stephen Lawrence Schwartz (born March 6, 1948) is an American musical theater lyricist and composer. In a career spanning over five decades, Schwartz has written such hit musicals as Godspell (1971), Pippin (1972), and Wicked (2003).

Explanation:


A 30N force is applied to an object having a mass of 300 grams. Calculate the acceleration of the moving object

Answers

Answer:

9000 m/s

Explanation:

A=Fm

Acceleration = Force x Mass(Newtons)

Tìm quãng đường đi được
Biết V0=4m/s , a=1m/s , t=5s

Answers

Answer:

hii bee bbtym tayo as a friend huhuhuhu

A rainbow is seen in a rainy day. Describe its reason

Answers

Answer:

A rainbow requires water droplets to be floating in the air. That's why we see them right after it rains. The Sun must be behind you and the clouds cleared away from the Sun for the rainbow to appears.

I NEED ANSSWER IN THE NEXT 5 MINITES. OR NO BRAINLY REWARD.
a rock which has the mass of 25 kg is on a cliff 42 m high. Calculate the rocks potential energy. Given g = 10 m/s^2. NO FALSE ANSWERS ACCEPTED.

1,050 J
10,500 J
5,250 J
220,500 J

Answers

1050

Explanation:

you have to multiply 25kg time42m

An aircraft traveling at 600km/h accelerates steadily at 10km/h per second. Taking the speed of sounds as 1100km/h at the aircraft's altitude, how long will it take to reach the sound barrier.​

Answers

Answer:

V2 - V1 = a  t    for uniformly accelerated motion

t =  (V2 - V1) / a = (1100 -600) km/hr / 10 km/hr/sec

t = 500 / 10 sec = 50 sec

a dog is running at 5.5 m/s then comes to a complete stop in 1.5 seconds. What is the dogs acceleration?

Answers

The dog's acceleration running at 5.5 m/s then comes to a complete stop in 1.5 seconds is 8.25m/s²

HOW TO CALCULATE ACCELERATION:

The acceleration of a moving object can be calculated by multiplying the velocity of the object by the time taken. That is;

Acceleration (m/s²) = speed (m/s) × time (s)

According to this question, a dog is running at 5.5 m/s then comes to a complete stop in 1.5 seconds. The acceleration can be calculated as follows:

Acceleration = 5.5 × 1.5

Acceleration = 8.25m/s²

Therefore, the dog's acceleration running at 5.5 m/s then comes to a complete stop in 1.5 seconds is 8.25m/s².

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The horizontal surface on which the block of mass 2.2 kg slides is frictionless. The force of 27 N acts on the block in a horizontal direction and the force of 81 N acts on the block at an angle as shown below is the magnitude of the resulting ac celeration of the block? The acceleration of gravity is 9.8 m/s ^ 2

Answers

The magnitude of the resulting acceleration of the block is 6.14 m/s².

The given parameters;

mass of the block, m = 2.2 kghorizontal force on the block, F = 27 Nforce below the horizontal, 81 N at 60⁰

The net horizontal force on the block is calculated as follows;

[tex]F_x = 27 \ - 81 \times cos (60)\\\\F_x = -13.5 \ N[/tex]

The acceleration of the block is calculated as follows;

[tex]a = \frac{-13.5}{2.2} \\\\a = - 6.14 \ m/s^2\\\\a = 6.14 \ m/s^2 \ to \ the \ left[/tex]

Thus, the magnitude of the resulting acceleration of the block is 6.14 m/s².

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Will give brainiest if right

Answers

The answer would be C

Which has more kinetic
energy, a bowling ball or
a baseball rolling on a
table at the same speed?
Why?

Answers

Answer: a bowling ball

Explanation: a baseball doesn’t need as much kinetic energy because it’s smaller

If a bowling ball is rolling at the same speed as a small baseball then since the bowling ball is bigger it has more kinetic energy

Answer: A Bowling Ball

Explanation: A baseball doesn’t require much kinetic energy because it is smaller than a bowling ball and much lighter.

Gravitational potential energy is just one type of stored energy.
t or f??


​

Answers

Answer: true because potential energy is stored in a object

Explanation:

an astronaut on an eva has wandered dangerously far away from the shuttle. she has also exhausted all the fuel in her jet pack. how can she get back to the shuttle?

Answers

The conservation of the momentum allows to find the result of how the astronaut can return to the spacecraft is:

Throwing the thruster away from the ship.

The momentum is defined as the product of the mass and the velocity of the body, for isolated systems the momentum  is conserved. If we define the system as consisting of the astronaut and the evo propellant, this system is isolated and the internal forces become zero. Let's find the moment in two moments.

Initial instant. Astronaut and thrust together.

        p₀ = 0

Final moment. The astronaut now the thruster in the opposite direction of the ship.

       [tex]m_f[/tex] = m v + M v '

where m is propellant mass and M the astronaut mass.

As the moment is preserved.

       0 = m v + M v ’

      v ’= [tex]- \frac{m}{M} \ v[/tex]  

We can see that the astronaut's speed is in the opposite direction to the propeller, that is, in the direction of the ship.

The magnitude of the velocity is given by the relationship between the masses.

In conclusion, using the conservation of the momentun we can find the result of how the astronaut can return to the ship is:

Throwing the thruster away from the ship.

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What is downward force that acts on an airplane in flight

Answers

Answer:

重力

Explanation:

这是正确的答案还是不是

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