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
NeX [460]
3 years ago
12

3. A bird flying 4 m/s has 8 joules of kinetic energy. What is the mass of the bird?

Physics
1 answer:
lesya692 [45]3 years ago
3 0

Answer:

The mass of the bird is 1 [kg]

Explanation:

The kinetic energy is defined by the following equation:

E_{k} =\frac{1}{2} *m*v^{2}\\

where:

m= mass of the bird [kg]

v = velocity of the bird [m/s]

Ek = kinetic energy [J]

We need to clear the mass from the equation given.

m=\frac{2*E_{k} }{v^{2}} \\m=\frac{2*8}{(4)^{2} } \\m=1 [kg]

You might be interested in
If there is no slipping, a frictional force must exist between the wheels and the ground. in what direction does the frictional
djyliett [7]
The frictional force is always act in opposite direction of motion. if wheels is moving in +x axis or right then the f force is act in -x or left
8 0
3 years ago
Help<br> help<br> help<br> plsssssssss
Aliun [14]
Elements to the left tend to form positive ions is the right answer mark me brainlist
4 0
2 years ago
In a house, a circuit often includes multiple electrical outlets which are parallelconnected to a single voltage source. Each of
valkas [14]

Answer:

In parallel circuits, if one element has a problem, it can be eliminated and the rest of the elements continue to work.

Explanation:

There are two ways to connect electrical circuits, in series and in parallel.

Series circuits have the problem that when one element is damaged, the entire circuit is interrupted and runs out of power.

In parallel circuits, if one element has a problem, it can be eliminated and the rest of the elements continue to work.

In Breaker it is connected in series so that when some maintenance is needed, all the energy can be interrupted simultaneously and if some equipment tries to consume a lot of energy, the circuit prevents this action by interrupting the energy of the entire circuit

5 0
3 years ago
This equation shows the reaction that occurs when calcium carbonate
yarga [219]

Answer:

a. endothermic

Explanation:

The reaction shown is an endothermic reaction. In such reaction, they require an input of energy.

  • Endothermic changes involves absorption of heat from the surrounding.
  • The surrounding becomes colder at the end of the reaction.
  • When heat is on the reactant side, it suggests a reaction that requires a considerable input of energy.
3 0
2 years ago
Read 2 more answers
What did Bohr's model of the atom include that Rutherford's model did not have?
lara31 [8.8K]

Answer:

The correct option is energy levels

Explanation:

Rutherford's model of an atom suggests that an atom has a tiny positively charged central mass (now called the nucleus) which is surrounded by electrons (negatively charged) in a <em>cloud</em>-like manner.

Bohr's model went a bit further than the Rutherford's model in describing an atom by suggesting that the electrons which surrounds in the nucleus travel in <u>fixed circular orbits</u>. This description by <em>Bohr was able to describe the energy levels of orbitals which assumes that smallest orbitals have the lowest energy while the largest orbitals have the highest energy</em>.

4 0
2 years ago
Read 2 more answers
Other questions:
  • When the mass of the bottle is 0.125 kg, the KE is______ kg m2/s2.
    5·1 answer
  • An ideal air-filled parallel-plate capacitor has round plates and carries a fixed amount of equal but opposite charge on its pla
    7·1 answer
  • A single-slit diffraction pattern is formed by monochromatic electromagnetic radiation from a distant source passing through a s
    13·1 answer
  • 1) Rephrase the objective. (limit 2 sentences). Give a brief explanation of the concepts of linear motion, its characteristics a
    10·2 answers
  • A baseball with a mass of 0.15 kg is moving at a speed of 40 m/s. What is
    9·2 answers
  • A wheel that is rotating at 33.3 rad/s is given an angular acceleration of 2.15 rad/s 2. Through what angle has the wheel turned
    7·1 answer
  • What is the function of law
    7·1 answer
  • When dry ice appears to be smoking what is actually happening
    6·1 answer
  • Heat flows into a gas in a piston and work is performed on the gas by its surroundings. The amount of work done is equal to the
    10·1 answer
  • When does the net flux of dissolved molecules stop
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!