1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alexandr402 [8]
3 years ago
14

Question 1

Physics
1 answer:
OLEGan [10]3 years ago
8 0

Answer:

Fossil fuels formed over millions of years and they are being used more quickly than they can be  replaced.

Explanation:

The best reason why he use of fossil fuels should be limited is that fossil fuels formed over millions of years and they are being used more quickly than they can be replaced.

Fossil fuels contains a very rich energy which is trapped within the carbon atoms and are obtained during combustion.

It takes several geologic years for the fuels to  form. On the other hand, our current rate of consumption of fossil fuels cannot be sustained because, consumption cannot be matched with the formation.

You might be interested in
From part a, you know that surface temperature is a stellar property that we infer indirectly. What must we measure directly so
trasher [3.6K]

We need to directly measure the spectral type in order to determine the surface temperature of a star.

<h3>How do you find the properties of a star?</h3>

Astronomers can determine the temperature of a star by looking at its color and spectrum. The apparent brightness of a star describes how luminous it looks to us. The brightness of a star tells us how bright it really is. The luminance can be determined using both the perceived brightness and the distance.

A star's luminosity, or the total amount of energy it emits each second, is determined by two factors: The stellar photosphere's "Effective Temperature," T. the star's total surface area, which is influenced by its radius, R.

Because it controls how much fuel a star has and how quickly it burns it, a star's mass is its most fundamental characteristic. The majority of a star's life is spent burning hydrogen into helium in its core, which generates energy. The star needs to achieve a balance between gravity and outward pressure in order to continue to be "alive."

To know more about stellar property visit:

brainly.com/question/14950677

#SPJ4

4 0
11 months ago
Can an object with constant acceleration reverse its direction of travel? Can it reverse its direction twice? Explain.
Neko [114]

Answer:yes

Explanation:The constan acceleration means that it wont stop moving but if you kick it a different direction then it will change direction

6 0
2 years ago
A 60 cm diameter wheel accelerates from rest at a rate of 7 rad/s2. After the wheel has undergone 14 rotations, what is the radi
Mamont248 [21]

Answer:

a=368.97\ m/s^2

Explanation:

Given that,

Initial angular velocity, \omega=0

Acceleration of the wheel, \alpha =7\ rad/s^2

Rotation, \theta=14\ rotation=14\times 2\pi =87.96\ rad

Let t is the time. Using second equation of kinematics can be calculated using time.

\theta=\omega_it+\dfrac{1}{2}\alpha t^2\\\\t=\sqrt{\dfrac{2\theta}{\alpha }} \\\\t=\sqrt{\dfrac{2\times 87.96}{7}} \\\\t=5.01\ s

Let \omega_f is the final angular velocity and a is the radial component of acceleration.

\omega_f=\omega_i+\alpha t\\\\\omega_f=0+7\times 5.01\\\\\omega_f=35.07\ rad/s

Radial component of acceleration,

a=\omega_f^2r\\\\a=(35.07)^2\times 0.3\\\\a=368.97\ m/s^2

So, the required acceleration on the edge of the wheel is 368.97\ m/s^2.

6 0
3 years ago
A proton moves at constant velocity in the direction, through a region in which there is an electric field and a magnetic field.
dimaraw [331]

Answer:

F_{net}=0

Explanation:

It is given that, a proton moves at constant velocity, through a region in which there is an electric field and a magnetic field such that,

The electric field is, E = 800 V/m

Magnetic field, B = 0.25 T

We know that the net force in the region of magnetic and electric field is given by Lorentz forces. But here, the proton moves with constant velocity. So, the net force acting on it is 0.

i.e.

F_{net}=0

Hence, this is the required solution.

7 0
2 years ago
A ball is rolled of a 2.14m table at 8m/s. Find the time of flight for the ball and the horizontal range
Mama L [17]

Answer:

0.661 s, 5.29 m

Explanation:

In the y direction:

Δy = 2.14 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

(2.14 m) = (0 m/s) t + ½ (9.8 m/s²) t²

t = 0.661 s

In the x direction:

v₀ = 8 m/s

a = 0 m/s²

t = 0.661 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (8 m/s) (0.661 s) + ½ (0 m/s²) (0.661 s)²

Δx = 5.29 m

Round as needed.

3 0
2 years ago
Other questions:
  • The rotational speeds of four generators are listed in RPM (revolutions per minute). Arrange the generators in order based on th
    13·2 answers
  • Is 2.5m/s faster than 4m/s
    5·1 answer
  • 1. Which of the following materials would likely create the strongest, most stable slope?
    14·2 answers
  • Light travels through a substance at 1.97 x 10^8 m/s. What is the index of the liquid? What type of liquid is it?
    13·2 answers
  • A piece of gum is stuck to the outer edge of a horizontal turntable, which is revolving at a constant speed. The shadow of the g
    7·1 answer
  • Which of the following describes work?
    5·2 answers
  • For factors that affect capillarity<br>​
    11·2 answers
  • Need help asap
    7·1 answer
  • Hello :) how to do 25 (b) ?
    15·1 answer
  • According to the graph, during which time interval are the particles in the air slowing down?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!