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
miskamm [114]
2 years ago
14

Help me with this please!!!!!!!!!!!!!!!!

Physics
1 answer:
olga55 [171]2 years ago
6 0

Answer:

what do you need help with?

Explanation:

I would look up the periodic table of elements

hope this helps!

You might be interested in
Please I need with this
guajiro [1.7K]
I think its b im not sure im in 8th grade
8 0
2 years ago
Tahj walks 28 m south from Imhotep's front doors in order to get into his mothers car. If it takes him 7 s, what was average vel
DochEvi [55]
The correct answer is 4
7 0
2 years ago
Read 2 more answers
The speed at which a light aircraft can take off is 120 km/h. (A) What is the minimum constant acceleration required for the pla
kondor19780726 [428]

Answer:

A) a = 2.31[m/s^2]; B) t = 14.4 [s]

Explanation:

We can solve this problem using the kinematic equations, but firts we must identify the data:

Vf= final velocity = take off velocity = 120[km/h]

Vi= initial velocity = 0, because the plane starts to move from the rest.

dx= distance to run = 240 [m]

v_{f} ^{2} =v_{i} ^{2}+2*g*dx\\where:\\v_{f}=120[\frac{km}{h} ]*\frac{1hr}{3600sg} * \frac{1000m}{1km} =33.33[m/s]\\\\Replacing\\33.33^{2}=0+2*a*(240)\\ a=\frac{11108.88}{2*240}\\  a=2.31[m/s^2]\\

To find the time we must use another kinematic equation.

v_{f} =v_{i} +a*t\\replacing:\\33.33=0+(2.31*t)\\t=\frac{33.33}{2.31}\\ t=14.4[s]

7 0
3 years ago
Little Timmy wants to measure how tall his house is. He doesn’t have a tape measure but does have a stopwatch. He recruits Big B
Komok [63]

The distance covered by an object accelerating from rest is

D = (1/2) · (acceleration) · (time)² .

In this particular case, 'acceleration' is 9.8 m/s² ... due to gravity.

D = (1/2) · (9.8 m/s²) · (1.67 s)²

D = (4.9 m/s²) · (2.789 s²)

D =  13.67 meters

6 0
3 years ago
Two mirrors are touching so they have an angle of 35.4 degrees with one another. A light ray is incident on the first at an angl
alexandr1967 [171]

Answer:

54.6°

Explanation:

From law of reflection i=r.

So, construct the reflected ray at 55.7°degrees from the normal and let it fall on the other mirror.  

Now draw the second normal at the point of incidence and again measure the angle of incidence, and draw the angle of reflection.

If you consider triangle AOB, one angle is ∠AOB=90°

 and ∠OAB is 54.6°

 

From angle sum property third angle ie ∠ABO=180°-90°-54.6°=35.4°

 

So, the second incident angle will be 54.6°

Hence, the second reflected angle will be 54.6 degrees.

8 0
3 years ago
Other questions:
  • What is most likely the author’s motive for writing the article?
    12·2 answers
  • Hey I need help on this please???
    11·1 answer
  • Why are metals so much better at conducting than other solids
    10·1 answer
  • A motorboat, initially traveling at 5 m/s, accelerates (speeds up) at 10 m/s^2 over a distance of 500 m. What is the speed of th
    8·1 answer
  • a box having a mass of 50 kg is dragged across a horizontal floor by means of a rope tied on the front of it. the coefficient of
    12·1 answer
  • Pennies today are copper-covered zinc, but older pennies are 3.1 g of solid copper. What are the total positive charge and total
    13·1 answer
  • My dad gifted me a calculator. I have observed that very small cells are used in a calculator. What are these cells called and w
    7·1 answer
  • Please answer all three answers
    11·1 answer
  • At which point is potential energy greatest?
    7·1 answer
  • A 50,0 g silver spoon at 20.0°C is placed in a cup of coffee at
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!