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A Car makes a 75-mile trip South in 1 hour. For the first 30 minutes, it drove 50 mph. For the second 30 minutes, it drove 100 mph. Answer the following questions:
a. Instantaneous Velocity at minute 15:
b. Instantaneous Velocity at minute 45:
c. Average velocity of the entire trip in mph:​

Answers

Answer 1

Answer:

B

Explanation:


Related Questions

A satellite is in orbit 36000km above the surface of the earth. Its angular velocity is 7.27*10^-5 rad/s. What is the velocity of the satellite? (The radius of the earth is 6400km.)

Answers

Answer:

v = 3.08 km/s

Explanation:

Given that,

The angular velocity of the satellite = [tex]\omega=7.27\times 10^{-5} rad/s[/tex]

A satellite is in orbit 36000km above the surface of the earth.

The radius of the earth is 6400 km

Let v is the velocity of the satellite. It can be calculated as :

[tex]v=r\omega\\\\v=(36000\times 10^3+6400\times 10^3)\times 7.27\times 10^{-5}\\\\v=3082.48\ m/s\\\\v=3.08\ km/s[/tex]

So, the velocity of the satellite is 3.08 km/s.

When we stretch a spring, which two factors affect how much elastic
potential energy is stored in it

Answers

mass and gravitational field

please help! you are awesome! also brainliest :)
The diagram below shows the two forces that keep Earth in orbit around the Sun.

What is responsible for Earth's movement toward the Sun?

A. Sun's forward motion
B. Earth's forward motion
C. Expansion of the universe.
D. force of gravity

Answers

Answer:

It's d

Explanation:

Answer: D

Explanation:

Force of gravity

how to write it in second? ​

Answers

Answer:

like this

Explanation:

What happens when stress builds up at faults?

A. Energy is absorbed
B. Rock can bend and break
C. Plates form on the lithosphere
D. earthquakes develop at earths surface

Answers

Answer:

The answer is D because when the faults move that is the tectonic plates moving. So earth quakes will be forming when the fault moves.

Explanation:

AB just took the test

what is the foemula for this problem

Answers

The formula of this problem is 450 divided by 35

Need help ASAP
Thanks+ BRAINLIST only for correct answers

4. Which of the following sets of EM radiation can harm your body cells?
a. Gamma ray, microwaves, infrared
b. Light, ultraviolet, x-ray
c. Microwaves, ultraviolet, infrared
d. Ultraviolet, x-ray, gamma ray

Answers

I’m pretty sure it’s D
It is D I’m certain

Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum. Compared with human vision, these snakes can sense electromagnetic waves that have

a lower frequency and a shorter wavelength.
a higher frequency and a longer wavelength.
a lower frequency and a longer wavelength.
a higher frequency and a shorter wavelength.

Answers

Answer:

A lower frequency and a longer wavelength is correct on edge 2021

please thank the person above me though, they deserve it.

These snakes can sense electromagnetic waves that have a lower frequency and a longer wavelength.

How do snakes detect?

With almost ineffective hearing and vision, snakes can be extremely fast animals. Snakes can use chemoreceptors, heat, and even their tails to recognize prey and mates. With mostly ineffective hearing and vision systems, snakes can be extremely fast animals.

They also “see” in infrared. Thanks to the mechanism, they can track prey up to a meter away by the heat of their bodies. They use a simple organ, the loreal pit, located near the nostrils.

See more about snakes at brainly.com/question/412688

Given that renewable sources provide only a small percentage of our energy and that nuclear power is so expensive, in your opinion, what can we realistically do to get off fossil fuels as soon as possible?

Answers

Answer:

No getting rid of fossil fuel is not at all possible.

Explanation:

Dream of 100% renewable energy is possible through electrification and use of energy from sun, water and wind. Since, the high production cost of power plant for extracting energy from these sources in itself is a big challenge and hence decarbonized energy in current scenario is not realistic.

HELP PLS MARKING BRANLIST 100 points TAKING TEST RN

15 m/s is a _____
measurement.


a vector quantity

a scalar quantity

neither a scalar nor a vector quantity.

both a scalar and a vector quantity


Answers

Answer:

I believe its a vector quantity

Hope this helps!!!

Answer:

Both scalar and vector qualities

Explanation:

I need help ASAPP
Thanks+ BRAINLIST only for correct answer for these questions.

Which among the following forms of electromagnetic waves has the highest frequency range?
O Microwave
O Radio waves
O X-ray
O Ultraviolet

Radio waves carry information from a broadcasting station to your radio or television.
-visible light
- sound
-X -ray
- gamma ray

Answers

Answer:

First) X-ray

Second) I think sound waves

Explanation:

What is the momentum of a car that is 12000 g and is traveling at 45 m/s? (LOOK AT THE UNITS)
a)
267 kg*m/s
b)
540000 kg*m/s
c)
540 kg*m/s
d)
.27 kg*m/s
e)
54000kg*m/s

Answers

Answer:

e

Explanation:

An object is raised by a height of 8.95 m and gains 3099.1 J in its gravitational potential store. If the object has a mass of 961.1 kg, what is the strength of the gravitational field in N/kg? Give your answer to 2 decimal places.

Answers

Answer: Calculate GPE for different gravity of different enviornments - Earth, the Moon, ... kg, g, lb, oz ... variable in the physics equation for gravitational potential energy, when three of ... PEg or PE = gravitational potential energy; m = mass of an object ... have 147.15 Joules of potential energy, PE = 3kg * 9.81 m/s2 * 5m = 147.15 J.

DESPERATE WILL GIVE BRAINLIST AND THANKS
What is one way that genetic engineering could help humans?

A. Gene therapy may be able to help people with genetic disorders make cells that work properly and alleviate their symptoms.

B. Genetic engineering may help bring much needed vitamins and vaccines to people living in poverty.

C. Genetic engineering may help remove genetic predispositions for certain diseases, such as cancer, from a person’s DNA.


D. These are all ways genetic engineering could help humans.

Answers

Answer:

I Choose C, Because Genetically engineered bacteria and other microorganisms are currently used to produce human insulin, human growth hormone, a protein used in blood clotting, and other pharmaceuticals and the number of such compounds could increase in the future.

So Basically There Saying It Can Be Used To Remove Certain Diseases.

4) A boy pulls a wagon with a force of 6N to the
left as another boy pushes it with a force of 4N to
the left. What is the net force?

Answers

10N

F=(6N east)+(4N east)=10N east

8.92 x 10 ^ 6 (convert from scientific notation to a standard aka regular number)

Answers

The answer is 8,920,000

8,926,456 okay sir you capin

What are 2 benefits from vitamin b and 2 food sources?

Answers

2 benefits are, it has a direct impact on your energy level and helps maintain good health. 2 food sources are avocados and leafy greens.

If an engine can produce 670 J of energy in 1 min, how many watts can it output?

Answers

Answer:

11.2Watts

Explanation:

Given parameters:

Energy produced by the engine  = 670J

Time taken  = 1min  = 60s

Unknown:

Number of watts it can output  = ?

Solution:

This problem entails finding the power of the engine.

Power is the rate at which work is being done.

So;

      Power  = [tex]\frac{Work done }{time}[/tex]  

       Power  = [tex]\frac{670}{60}[/tex]    = 11.2Watts

Plss help with my science

Answers

Answer:

rotates, axis,not sure,day, not sure, night, revolves, not sure, hemisphere, towards, summer, away, winter

Explanation:

For an ideal gas, the change in internal energy AU is zero during an
A. isobaric process
B. isochoric process
C. isothermal process
D. adiabatic process

Answers

D is the answer i hope

Show the steps im confused.
The answer is 14 m/s

Answers

Answer:

14 m/s

Explanation:

KE=1/2mv^2

5880J= 1/2(60kg)v^2

5880J=(30)(V^2)

5880/30=V^2

196=v^2

square root of 196 is 14

So u divide the mass by two
Then KE/M and square root it
And u should end up with (image)
And solve

I’m not good at explaining
I hope this helps:)

light waves from the sun can travel trough outer space and reach the earth

Answers

Answer:

this is true

Explanation:

A wave with a frequency of 28 Hz has a wavelength of 6 meters. At what speed will this wave travel?

Answers

Answer:

168m/s

Explanation:

Given parameters:

Frequency  = 28Hz

Wavelength  = 6m

Unknown:

Speed of the the wave travel  = ?

Solution:

To solve this problem, we us the wave - velocity equation:

    Velocity  = Frequency x Wavelength

 Velocity  = 28 x  6  = 168m/s

Can an object with acceleration of zero be in motion?

Answers

Answer:

NO

Explanation:

if it has no acceleration then it's not moving

Answer:

Yes when the velocity is constant then the acceleration is said to be zero. Thus an object with 0 acceleration can be in motion.

Let me give you an example to make you more clear

Example:

When  a car is  traveling at a constant 90 km/h in a straight line has nonzero velocity and zero acceleration.

Can you explain what a mixture is from a chemical prospective?

Answers

Answer:

I know I'm late but...

Explanation:

A mixture is the combination of two or more substances together. And I'm pretty sure that a mixture has no chemical substances. And mixtures can be physically separated.

Hope this helps you!

Stay safe and have a wonderful day/night!! :)

Please give brainliest to the person above!!!!!

please help! you are amazing! brainliest!
The NGC 3603 region of space is shown below. It is a cloud of gas and dust. Stars are forming in this cloud. How would NGC 3603 be classified?

A. As a nebula
B. As a galaxy
C. As a planet
D. As a solar system

Answers

I think it’s a nebula i hope it’s right

The NGC 3603 region of space is shown below. It is a cloud of gas and dust. Stars are forming in this cloud. The NGC 3603 be classified as a nebula. The correct option is A.

What is a nebula?

A tiny, ball-shaped nebula is known as a planetary nebula. It generates an ionized gas that is luminous. Large and typically erratic clouds are produced by diffuse nebulae.

Due to their big stars, they typically form a cluster of stars. a cloud of gas in space that can be seen in the night sky as a vaguely discernible brilliant patch, as something black, or as a shadow against other luminous objects.

Dust and gases, primarily hydrogen and helium, make up nebulae. The mass of gas and dust eventually grows so large that it is forced to collapse by gravity. The material in the cloud's core heats up as a result of the collapse, and this hot core is the start of a star.

Therefore, the correct option is A. As a nebula.

To learn more about nebula, refer to the link:

https://brainly.com/question/21420531

#SPJ2

HELP PLS MARKING BRANLIST 100 PTS TAKING TEST RN

How long will your trip take if you travel 890 km at an average speed of 92 km/hr?


81,880 hrs

9.67 s

9.67 hrs

81,880 s

Answers

9.67 hrs. Like if this helped :)

what is economic development​

Answers

Answer:

Economic Development is the creation of wealth from which community benefits are realized. It is more than a jobs program, it's an investment in growing your economy and enhancing the prosperity and quality of life for all residents. Economic development means different things to different people.

!!URGENT PLEASE!!

The equation for the formation of water from hydrogen gas and oxygen gas is 2H2+O2→2H2O . How many grams of water can be made from 64 g of oxygen gas?

Answers

Answer: 144 g

the mol of the oxygen gas is 64/16 = 4 (mol)

we have:

2H2 + O2 => 2H2O

           4  ------> 8

=> the mol of H2O is 8 mol

=> m(H2O) = 8.(2 + 16) = 8.18 = 144 (g)      

Explanation:

i agree with the other comment

Use the equation d = st, where d = distance, s = speed, and t= time. If you ride
a skateboard at a speed of 8 m/s for 12 seconds, how far do you travel?
O A. 48 m
B. 1.5 m
C. 96 m
D. 4 m

Answers

Answer:

C- 96 m

Explanation:

d= st

d= 8 m/s x 12 seconds

d= 96 metres

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