Answer:
A flannel shirt is an insulator.
Explanation:
A conductor is a material in which electric current can flow easily. Some examples of conductors include metals, such as copper. In contrast and insulator does not allow electric current to pass through it. Usually non-metallic items are considered good insulators. Imagine if you got shocked and your clothes were conductors! You would get quite a shock.
b) all atoms of the same element have the same mass
c)atoms contain subatomic particles
d) a compound contains atoms of more than one element
the Sun is the hottest object in our solar system.
B.
the Sun is the brightest object in our solar system.
C.
the Sun is the most massive object in our solar system.
D.
the Sun is the slowest object in our solar system
Answer:
5m/s
Explanation:
The skier accelerates at 1 m/s, then, the acceleration is:
to find the speed after 5 seconds you use the following formula:
but vo = 0m/s because the skier is at rest at the beginning.
You do v the subject of the formula:
hence, the velocity is 5m/s
Answer:
10g
Explanation:
The experiment is about melting of tin. When solid tin is melted, it retains the amount of substance it originally has and we expect it to still be 10g.
Mass is the quantity or amount of matter contained in a substance. For most chemical processes, the law of conservation of matter is always succinctly observed.
The law states that "matter is neither created nor destroyed in a chemical reaction or process". Although melting is a phase change, we can adapt this law to the process. Owning to no loss of matter in the melting procedure, the amount of substance remains the same.
Therefore, we are left with about the same mass of substance we started with which is 10g.
Answer:
10g
Explanation:
As the Law of Conservation of Mass states that " Mass can neither be created nor be destroyed in a chemical reaction".
Though melting of tin isn't a chemical change, the same logic is applied here...
Hence,
The mass of tin will be 10 g itself...
Answer:
The average force between the ball and bat during contact is 1131N.
Explanation:
The average force can be found employing Newton's second law:
(1)
Where F is the force, m is the mass and a is the acceleration.
The acceleration can be determined employing the equations for a Uniformly Accelerated Rectilinear Motion:
(2)
Where is the final velocity,
is the initial velocity and t is the time.
Then, a will be isolated from equation 2:
(3)
Replacing equation (3) in equation (1) it is gotten:
But , therefore:
So, the average force between the ball and bat during contact is 1131N.