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
Naya [18.7K]
4 years ago
12

A 10-kg rock and 20-kg rock are dropped from the same height and experience no significant air resistance. if it takes the 20-kg

rock a time t to reach the ground, what time will it take the 10-kg rock to reach the ground?
Physics
1 answer:
bulgar [2K]4 years ago
3 0
<span>Mass of rock 1 is m1 = 10 kg Mass of rock 2 is m2 = 20 kg 10-kg rock takes T (the same time ) to reach the ground as similar to 20-kg rock that takes time T to reach the ground. If no air resistance is present, the rate of descent depends only on how far the object has fallen, no matter how heavy the object is. This means that two objects will reach the ground at the same time if they are dropped simultaneously from the same height. This statement follows from the law of conservation of energy and has been demonstrated experimentally by dropping a feather and a lead ball in an airless tube. When air resistance plays a role, the shape of the object becomes important. THUS 10-KG & 20-KG ROCK reaches the ground in T-time</span>
You might be interested in
In xray machines, electrons are subjected to electric fields as great as 6.0 x 10^5 N/C. Find
katrin2010 [14]

Answer:

a = 1.055 x 10¹⁷ m/s²

Explanation:

First, we will find the force on electron:

E = \frac{F}{q}\\\\F = Eq\\

where,

F = Force = ?

E = Electric Field = 6 x 10⁵ N/C

q = charge on electron = 1.6 x 10⁻¹⁹ C

Therefore,

F = (6\ x\ 10^5\ N/C)(1.6\ x\ 10^{-19}\ C)\\

F = 9.6 x 10⁻¹⁴ N

Now, we will calculate the acceleration using Newton's Second Law:

F = ma\\a = \frac{F}{m}\\

where,

a = acceleration = ?

m = mass of electron = 9.1 x 10⁻³¹ kg

therefore,

a = \frac{9.6\ x\ 10^{-14}\ N}{9.1\ x\ 10^{-31}\ kg}\\\\

<u>a = 1.055 x 10¹⁷ m/s²</u>

5 0
3 years ago
Which one of the following accurately describes the force of gravity? A. The gravity acceleration has no effect on a body moving
attashe74 [19]
Answer: C
The gravity acceleration is in the same direction as the force of gravity, and thus toward the center of the earth.

Explanation:
All celestial bodies in our solar system experience forces between each other. On earth, the localized gravitational force in the earth's atmosphere is directed toward the center of the earth. It's magnitude is
32.174 ft/s² in English units,
9.807 m/s² in SI units.

All objects that have mass are subject to the earth's gravitational acceleration. The product of mass and the earth's gravitational acceleration defines the weight of an object as its gravitational force.
4 0
3 years ago
Read 2 more answers
I’m a freshman, I got a 80% in the first quarter, 85% in the second and 70% in the third. I have a 46% in the fourth and 34 tota
Nadusha1986 [10]

Answer:

you will pass but if your grade become lower and u get more absences you will fail

5 0
3 years ago
- A certain mass is suspended at one end of a spring of spring-constant of 32,000gm/s2. The
babunello [35]

Answer: I am pretty sure it is (b) what is the value of mass suspended at the end of the spring.

Explanation:

6 0
2 years ago
Can someone help me answer this??
Bingel [31]

Answer:

<h2>3,2 oky na dekh Lena ek bar</h2><h2>2,5</h2>
7 0
3 years ago
Other questions:
  • A star has a surface temperature of 30,000 K. At what wavelength does the peak radiation occur? 100 nm
    15·2 answers
  • Given equation is F=mv ×v/R<br> what is the relationship exist between F and R?
    11·1 answer
  • Which circuit component usually acts as a switch or amplifier?
    10·1 answer
  • How fast must a 70 kg student be running to have a kinetic energy of 568 J?!
    6·1 answer
  • Which Period 2 element would you expect to have the highest electrical and
    7·1 answer
  • Water pours into a fish tank at a rate of 0.3 cubic meters per minute. How fast is the water level rising if the base of the fis
    11·1 answer
  • Help me please,
    13·1 answer
  • A crane lifts an air conditioner to the top of a building. If the building is 12 m high, and the air conditioner has a mass of 2
    15·1 answer
  • Which are two characteristics of a proton
    6·2 answers
  • A steel rod has a radius of 10mm and a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!