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
HACTEHA [7]
3 years ago
15

When illustrating relative dating by

Physics
1 answer:
Rainbow [258]3 years ago
8 0

Answer:

A The Bottom

Explanation:

Brainlist Tho??

You might be interested in
Consider two identical insulated metal spheres, A and B. Sphere A initially has a charge of -6.0 units and sphere B initially ha
Oksi-84 [34.3K]

Answer:

<em>-2 units of charge</em>

Explanation:

charge on A = Qa = -6 units

charge on B = Qb = 2 units

if the spheres are brought in contact with each other, the resultant charge will be evenly distributed on the spheres when they are finally separated.

charge on each sphere will be = \frac{Qa + Qb}{2}

charge on each sphere =  \frac{-6 + 2}{2} = \frac{-4}{2} = <em>-2 units of charge</em>

8 0
3 years ago
A farmhand attaches a 25-kg bale of hay to one end of a rope passing over a
Georgia [21]

Explanation:

Newton's second law:

∑F = ma

277 N − 245 N = (25 kg) a

a = 1.28 m/s²

8 0
3 years ago
Design an experiment to test the rate at which temperature changes for two different masses (amounts) of water.
mrs_skeptik [129]

Answer:Experimental Question:  How does the amount of a substance affect the rate at which temperature changes?

It depends on the conductivity of the material. If the shift is extreme, the temperature near the heating / cooling source will be similar to the temperature of the heating / cooling source and it will take time for the remainder of the material to rise to temperature. It will depend on the conductivity of the material.

Hypothes is:  

Materials  List:

• digital stopwatch

• 250ml beaker

• rubber bung

• thermometer

• bunsen burner

• tripod

• gauze

• retort stand and clamp

• goggles

Safety Procedures *:

1. Adult supervision is required.  

2. Wear safety goggles, apron, and closed-toe shoes.  

3. Do not wear baggy sleeves or dangling jewelry. Tie long hair back.  

4. Use hot pads or oven mitts to handle hot objects.  

5. Do not reach over a hot burner.  

6. Do not leave the experiment unattended.  

7. Clean up spills immediately.  

8. Report any injuries to your Learning Coach or adult supervisor immediately

Experimental Procedures :

• Fill an empty beaker with exactly 150ml of water (check side-scale of beaker)

• Set up apparatus as shown above. Ensure the thermometer is about 2cm above the bottom of the beaker.

• Light the bunsen burner and put on a blue flame. Heat up the water.

• When the temperature on the thermometer has reached 90°C, immediately switch off the burner.

• Start the stopwatch and time for 5.0 minutes.

• Read the thermometer value at the 5.0 minute mark.

• Before repeating the experiment, check the level of water is still 150ml

Data Table:  

Start Temperature of Water (°C) Temperature after 5min (°C) Drop in Temperature

(°C) Average Rate of Cooling x 1000 (°C/s)

80 70 10 17

75 66 9 15

70 62 8 13

65 59 6 10

60 55 5 8

Analysis:  

Conclusions : There is a strong correlation between the average rate of cooling and the start temperature: the greater the start temperature, the  faster the average rate of cooling.

Explanation:

use quillbot or this will be considered plagerism

3 0
3 years ago
To have a change in acceleration there has to be a change in velocity.
tresset_1 [31]

Answer: Compared to displacement and velocity, acceleration is like the angry, fire-breathing dragon of motion variables. It can be violent; some people are scared of it; and if it's big, it forces you to take notice. That feeling you get when you're sitting in a plane during take-off, or slamming on the brakes in a car, or turning a corner at a high speed in a go kart are all situations where you are accelerating.

7 0
3 years ago
Read 2 more answers
A boat heads directly across a river. Its speed relative to the water is 3 m/s. It takes it 539 seconds to cross, but it ends up
nikklg [1K]

Answer:

3.24 m/s

Explanation:

Suppose that the boat sails with velocity (relative to water) direction being perpendicular to water stream. Had there been no water flow, it would have ended up 0m downstream

Therefore, the river speed is the one that push the boat 662 m downstream within 539 seconds. We can use this to calculate its magnitude

v_r = 662 / 539 = 1.23 m/s

So the boat velocity vector relative to the bank is the sum of of the boat velocity vector relative to the water and the water velocity vector relative to the bank. Since these 2 component vectors are perpendicular to each other, the magnitude of the total vector can be calculated using Pythagorean formula:

v = \sqrt{v_b^2 + v_r^2} = \sqrt{3^2 + 1.23^2} = \sqrt{9 + 1.5129} = \sqrt{10.5129} = 3.24 m/s

5 0
3 years ago
Other questions:
  • CALCULATING HALF LIFE
    9·1 answer
  • HELP PLEASE<br><br> Fill in the blank:<br> The ? of water is 1 g/cm3.
    10·1 answer
  • When a cube is inscribed in a sphere of radius r, the length Lof a side of the cube is . If a positive point charge Qis placed a
    8·1 answer
  • What will happen to the density of an object when it's mass increases?
    6·2 answers
  • [1] The assembly starts from rest and reaches an angular speed of 150 rev/min under the action of a 20-N force T applied to the
    7·2 answers
  • Which statements describe a situation in which work is being done? Check all that apply.
    9·1 answer
  • If v = 5.00 meters/second and makes an angle of 60° with the negative direction of the y–axis, calculate all possible values of
    9·1 answer
  • Directions:
    10·1 answer
  • What was done to protect the ozone layer?
    11·1 answer
  • The displacement of a 500 g mass, undergoing simple harmonic motion, is defined by the function :
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!