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
viva [34]
3 years ago
15

In order to identify them, animal fossils and other fossils nearby can be: A. compared B. piled C. seen

Physics
1 answer:
tigry1 [53]3 years ago
5 0

Answer:

A.compared

Explanation:

Fossils help figure out the time that organisms lived. If you know one of the fossils, it can be used as a reference for others around.

You might be interested in
ASAP please!<br> need physics help on test
givi [52]

Answer:

I think its the second one sorry if im wrong

Explanation:

6 0
2 years ago
Which of the following is a<br> force that can oppose or change motion?
sergey [27]

Answer:

Friction force is the force that one object exerts in another when the two rub against each other. Most of the time, friction force opposes the motion of an object.

Explanation:

8 0
3 years ago
Read 2 more answers
A crate rests on a flatbed truck which is initially traveling at 17.9 m/s on a level road. The driver applies the brakes and the
Mamont248 [21]

Answer:

The minimum coefficient of friction required is 0.35.  

Explanation:

The minimum coefficient of friction required to keep the crate from sliding can be found as follows:

-F_{f} + F = 0      

-F_{f} + ma = 0      

\mu mg = ma

\mu = \frac{a}{g}

Where:

μ: is the coefficient of friction

m: is the mass of the crate

g: is the gravity

a: is the acceleration of the truck

The acceleration of the truck can be found by using the following equation:

v_{f}^{2} = v_{0}^{2} + 2ad

a = \frac{v_{f}^{2} - v_{0}^{2}}{2d}

Where:  

d: is the distance traveled = 46.1 m

v_{f}: is the final speed of the truck = 0 (it stops)      

v_{0}: is the initial speed of the truck = 17.9 m/s

a = \frac{-(17.9 m/s)^{2}}{2*46.1 m} = -3.48 m/s^{2}        

If we take the reference system on the crate, the force will be positive since the crate will feel the movement in the positive direction.  

\mu = \frac{a}{g}  

\mu = \frac{3.48 m/s^{2}}{9.81 m/s^{2}}

\mu = 0.35

Therefore, the minimum coefficient of friction required is 0.35.  

I hope it helps you!

4 0
3 years ago
What type of stellar object has the greatest density
r-ruslan [8.4K]
A black hole is the answer I think.
8 0
3 years ago
Read 2 more answers
A weightlifter works out at the gym each day. Part of her routine is to lie on her back and lift a 43 kg barbell straight up fro
Tasya [4]

Answer:

A. 231.77 J

B. 5330.71 J

C. 46 donuts

Explanation:

A. To lift the barbell once, she will have to extend it the full length of her arm. The work done will then be:

W = F * d

Where the force is the weight of the barbell.

F = m * g

Hence, the work done in lifting the barbell is:

W = m * g * d

W = 43 * 9.8 * 0.55

W = 231.77 J

B. If she does 23 repetitions, the total energy she expend will be equal to the Potential energy when the barbell is lifted multiplied by 23:

E = 23 * m * g * d

E = 23 * 231.77

E = 5330.71 J

C. 1 Joule = 4.184 calories

5330.71 Joules = 5330.71 * 4.184 = 22303.69

If 1 donut contains 490 calories, the number of donuts she will need will be:

N = 22303.69/490 = 45.5 donuts or 46 donuts

5 0
3 years ago
Other questions:
  • Can someone explain what ice jacking is and how it can cause structures to fail?
    7·1 answer
  • Suppose that you're facing a straight current-carrying conductor, and the current is flowing toward you.
    13·2 answers
  • A proton starts from rest near the surface of a sheet of charge. It experiences a force of 14.0 microNewtons towards the sheet.
    8·1 answer
  • The duration of a photographic flash is related to an RC time constant, which is 0.200 µs for a certain camera. (a) If the resis
    11·1 answer
  • How are limiting factors related to carrying capacity
    10·1 answer
  • Substance Specific Heat (1 kg"K"
    13·2 answers
  • You are researching a fungus that can kill banana plants. Which source is
    6·1 answer
  • Of orbital radius, orbital velocity, orbital circumference, or radial area swept through, which of these stays constant accordin
    7·1 answer
  • A 8.0-g bullet with an initial velocity of 115.0 m/s lodges in a block of wood and comes to rest at a
    14·1 answer
  • Two equal-mass balls swing down and hit identical bricks while traveling at identical speeds. Ball A bounces back, but ball B ju
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!