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
Nana76 [90]
3 years ago
7

A solar cooker, really a concave mirror pointed at the sun, focuses the sun's rays 16.0 cm in front of the mirror. what is the r

adius of the spherical surface from which the mirror was made?
Physics
1 answer:
VARVARA [1.3K]3 years ago
5 0
The focal point of a concave mirror is halfway along the radius, therefore the radius would be 2•16= 32 cm
You might be interested in
Graphs are ____ of relationships.
sashaice [31]

Answer:

Diagrammatic representation

8 0
3 years ago
A runner with a mass of 80kg accelerates from 0 to 9 m/s in 3 s find the net force
frosja888 [35]
So, first you find your acceleration which is 3m/s^2, using the acceleration formula.
Now set up your equation, F=ma, so put in the stuff, F=80kg·3m/s^2. Then solve your equation by multiplying, and you get F=240N, since newtons are your measurement.
Hope this helps
4 0
3 years ago
In which part of the scientific method do you tell why the research is being done?
wel
You tell it in pupouse
5 0
3 years ago
Read 2 more answers
Help with #3 please
Marizza181 [45]

Answer:

The answer to your question is va = 8 cm/s, vb = 12.5 cm/s, a = 9 cm/s²

Explanation:

Data

Ta = 0.125 s

Tb = 0.08 s

Δtab = 0.5 s

distance = 1 cm

Process

1.- Calculate va

va = 1/0.125 = 8 cm/s

vb = 1/0.08 = 12.5 cm/s

2.- Calculate Δv

Δv = 12.5 - 8

Δv = 4.5 cm/s

3.- Calculate acceleration

a = Δv / Δt

a = 4.5/0.5

a = 9 cm/s²

4 0
3 years ago
Singly charged gas ions are accelerated from rest through a voltage of 10.3 V. At what temperature (in K) will the average kinet
Natasha_Volkova [10]

Answer:

Temperature of the gas molecules is 7.96 x 10⁴ K

Explanation:

Given :

Ions accelerated through voltage, V = 10.3 volts

The work done to change the position of singly charged gas ions is given by the relation :

W = q x V

Here q is charge of the ions and its value is 1.6 x 10⁻¹⁹ C.

Average kinetic energy of gas molecules is given by the relation:

K.E. = \frac{3}{2}kT

Here T is temperature and k is Boltzmann constant and its value is 1.38 x 10⁻²³ J/K.

According to the problem, the average kinetic energy of gas is equal to the work done to move the singly charged ions, i.e. ,

K.E. = W

\frac{3}{2}kT = qV

Rearrange the above equation in terms of T :

T= \frac{2qV}{3k}

Substitute the suitable values in the above equation.

T=\frac{2\times1.6\times10^{-19}\times10.3 }{3\times1.38\times10^{-23} }

T = 7.96 x 10⁴ K

5 0
3 years ago
Other questions:
  • The solid block shown here has a mass of 146 grams. What is the block’s density?
    9·1 answer
  • If Zack has a mass of 80 kg calculate his weight on Earth. Please show work, thank you!
    11·1 answer
  • What is the formula for finding the frequency in longitudinal waves and also transverse waves? Thank you!
    15·2 answers
  • Which statement correctly describes earths magnetic field? <br> 20 point question!!!!
    12·1 answer
  • Let's see about this one.
    9·2 answers
  • If an object moving at 5 m/s accelerates for 30 seconds at a rate of 2
    5·1 answer
  • What happens to the particles in a substance when temperature rises
    6·1 answer
  • In which of the following cases does a car have a negative velocity and a positive acceleration? A car that is traveling in the:
    10·1 answer
  • A dish is given to you, which contains a blackish-yellow powder. When you move a magnet over it, you are amazed to see black par
    13·1 answer
  • Why does hitting a magnet with a hammer cause the magnetism to be reduced?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!