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Ostrovityanka [42]
3 years ago
9

A pendulum bob swings back and forth many times before stopping. Heat produced by _____ reduces the _____ available to the pendu

lum bob.
A. friction; heat
B. friction; energy
C. kinetic energy; heat
D. potential energy; heat
Physics
2 answers:
serg [7]3 years ago
4 0
B. friction, energy
attashe74 [19]3 years ago
3 0

Answer:

b

Explanation:

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Which structure is represented by letter B?
KATRIN_1 [288]

Answer:

A. a Cytosol

Explanation:

The cystosol is the liquid found inside of cells. it is a water based solution in which organelles, proteins, and other cell structures float.

5 0
3 years ago
PLEASE ANSWER 50 points
Evgen [1.6K]
Increase the force the engine provides and decrease the mass of the car
6 0
3 years ago
Sorry that i ask for too much but I'm horrible at this ⭐-_-
Evgesh-ka [11]

Answer:

1. A

2. C

3. D

4.A

Explanation:

6 0
2 years ago
Read 2 more answers
You happen to know that the coefficient of static friction between your patio table and the ground is 0.42. You decide you want
Deffense [45]

Answer:

If the force applied is larger than 185.2 N, yes.

Explanation:

In order to move the table, the pushing force must be larger than the frictional force. The frictional force is given by:

F_f = \mu mg

where

\mu=0.42 is the coefficient of static friction

m=45 kg is the mass of the table

g=9.8 m/s^2 is the gravitational acceleration

Substituting,

F_f=(0.42)(45 kg)(9.8 m/s^2)=185.2 N

So, we are able to move the table if we push with a force larger than 185.2 N.

4 0
3 years ago
On the earth, when an astronaut throws a 0.250-kg stone vertically upward, it returns to his hand a time T later. On planet X he
Liula [17]

Answer:

correct is d) a ’= g / 2

Explanation:

For this exercise let's use the kinematics equations

On earth

      v = v₀ - a t

     a = (v₀- v) / T

On planet X

    v = v₀ - a' t’

    a ’= (v₀-v) / 2T

Let's substitute the land values ​​in plot X

     a’= a / 2

Now let's use Newton's second law

       W = ma

      m g = m a

      a = g

We substitute

      a ’= g / 2

So we see that on planet X the acceleration is half the acceleration of Earth's gravity

4 0
2 years ago
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