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
ELEN [110]
3 years ago
7

How do we determine the age of rocks and other geologic features?

Physics
1 answer:
Mamont248 [21]3 years ago
4 0

Answer:To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.

Explanation:

You might be interested in
If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the
PolarNik [594]

Answer:

a. v₁ = 16.2 m/s

b. μ = 0.251

Explanation:

Given:

θ = 15 ° , r = 100 m , v₂ = 15.0 km / h

a.

To determine v₁ to take a 100 m radius curve banked at 15 °

tan θ  = v₁² / r * g

v₁ = √ r * g * tan θ

v₁ = √ 100 m * 9.8 m/s² * tan 15° = 16.2 m/s

b.

To determine μ friction needed for a frightened

v₂ = 15.0 km / h * 1000 m / 1 km * 1h / 60 minute * 1 minute / 60 seg

v₂ = 4.2 m/s

fk = μ * m * g

a₁ = v₁² / r = 16.2 ² / 100 m = 2.63 m/s²

a₂ = v₂² / r = 4.2 ² / 100 m = 0.18 m/s²

F₁ = m * a₁  ,  F₂ = m * a₂

fk = F₁ - F₂   ⇒  μ * m * g = m * ( a₁ - a₂)

μ * g = a₁ - a₂   ⇒  μ = a₁ - a₂ / g

μ = [ 2.63 m/s² - 0.18 m/s² ] / (9.8 m/s²)

μ = 0.251

3 0
3 years ago
A train accelerates from 23m/s to 190m/s in 54 seconds. What was its acceleration?
Ierofanga [76]

Answer:

Use the method on the image and solve it.

3 0
3 years ago
PLEASE HURRY Take 40 points.please just look at the picture.​
Fynjy0 [20]

Answer:

It you get a sushi for work, for a party, then it leads to people being happy, as an independant variable

It is changing the molecular structure of a protein

Explanation:

7 0
3 years ago
Please help, no links please! I dont understand stand this question and im going to cry
Vaselesa [24]

Answer:

I'm pretty sure its helium

3 0
2 years ago
Read 2 more answers
What is the smallest unit that makes up matter
hram777 [196]
The smallest unit that makes up matter is an atom!
3 0
3 years ago
Read 2 more answers
Other questions:
  • A lens is designed to work in the visible, near-infrared, and near-ultraviolet. The best resolution of this lens from a diffract
    6·1 answer
  • RETAKE - A push or a pull that causes an object to change its motion is called!
    12·2 answers
  • The energy diagram shows the changes in energy during a chemical reaction.
    7·1 answer
  • If two negative charges of -2 C and -2 C are put 32,692 m apart from each other how much force will push them apart?
    8·1 answer
  • When will the human population stop growing?
    14·2 answers
  • Which describes how prevailing winds affect precipitation in a region?
    7·2 answers
  • The region where a magnet force is strongest is at the​
    7·2 answers
  • What is the velocity of a cheetah that sprints 100 meters west in 4 seconds?​
    13·1 answer
  • What is gravity ?short ans​
    9·1 answer
  • A basketball is tossed upwards with a speed of 5.0 m/s. ​We can ignore air resistance.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!