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
saveliy_v [14]
4 years ago
14

A 15-kg bicycle carrying a 50-kg boy is traveling at a speed of 5 m/s. What is the KE of the bicycle and the boy?

Physics
1 answer:
vovangra [49]4 years ago
4 0
Together as one moving package, their mass is (15 + 50) = 65 kg.

       Kinetic energy = (1/2) (mass) (speed)²

                               = (1/2) (65 kg) (5 m/s)²

                               =  (32.5 kg) (25 m²/s²)

                               =     812.5  kg-m²/s²  =  812.5 joules .
You might be interested in
I need help finding the acceleration.
Sladkaya [172]

Answer:

Second law of motion.

Explanation:

According to second law of motion Force is equals to mass multiplied by acceleration.

Here, Mass is given which is 10 kilograms.

         Force is given which is 100 Newton.

So, by putting the values of mass and force in the formula of second law of motion we will get the value of acceleration which is 10 meters per second per second.

3 0
3 years ago
Read 2 more answers
Two high-current transmission lines carry currents of 29.0 A and 78.0 A in the same direction and are suspended parallel to each
jarptica [38.1K]

Answer with Explanation:

We are given that

I_1=29 A

I_2=78 A

d=38 cm=\frac{38}{100}=0.38 m

1 m=100 cm

a.Length of segment,l=20 m

Magnetic force ,F=\frac{2\mu_0I_1I_2 l}{4\pi d}

\frac{\mu_0}{4\pi}=10^{-7}

Substitute the values

F=\frac{10^{-7}\times 29\times 78\times 20}{0.38}=0.0119 N

Hence, the magnetic force exert by each segment on the other=0.0119 N

b.We know that when current carrying in the wires are in same direction then the force will attract to each other.

Hence, the force will be attractive.

4 0
3 years ago
Read 2 more answers
Carbon dioxide is a substance made up of atoms of carbon and oxygen in fixed ratios. Carbon dioxide is?
Troyanec [42]
This indicates that carob dioxide is a compound 
4 0
3 years ago
Read 2 more answers
Electronegativity is<br>____ at the top of the periodic table.​
DanielleElmas [232]

Answer:

Electronegativity is a chemical property at the top of the periodic table

Explanation:

electronegativity is a chemical property that measures the ability of an atom to attract a bonding pair of electrons when it is part of a compound

it's a property of atom that increases as you go to the right and up.

One example is the Pauling scale. it is a numerical scale of electronegativities. It was first developed by Linus Pauling.

it is commonly used to calculate the ability of electronegativity to attract electrons to itself.

The most common electronegative element is Flourine, having an assigned value of 4.0, ranging down to caesium and francium, having the least electronegative at 0.7

3 0
4 years ago
Read 2 more answers
A moss begins to grow on a rock in an area that was previously uninhabited by life. This is an example of a .
Kitty [74]

Answer: primary ecological succession

Explanation:

Primary ecological succession: This occurs when a certain or some organisms dominate an area that was uninhabited of life. This may happen after a natural disaster that leaves the land barren. The presence of these organisms on the barren land will help the soil occupied to gain nutrients which will eventually allow some other plants to grow on it. The growth of plants will later invite insects and insects may invite animals.

8 0
3 years ago
Read 2 more answers
Other questions:
  • If you weigh 670 n on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun an
    5·1 answer
  • Mr. Nakamora wants to test the accuracy of an old balance in his classroom compared to a brand-new balance that he knows is accu
    14·2 answers
  • A drone traveling horizontally at 110 m/s over flat ground at an elevation of 3000 meters must drop an emergency package on a ta
    6·1 answer
  • The temperature of a 5.0 kg block increases by 3 degrees C when 2,000 J of thermal energy are added to the block. What is the sp
    12·1 answer
  • Gregor Mendel finished his pea plant experiments in 1863 and published his results in 1866. However, few scientists saw Mendel's
    6·1 answer
  • If you push against the wall the wall will push back what is the name of the force that pushes back?
    9·1 answer
  • [RM.03H]Which of these is the most likely impact of extensive mining of uranium to produce energy?
    5·2 answers
  • Astronauts land on another planet and measure the density of the atmosphere on the planet surface. They measure the mass of a 50
    10·1 answer
  • The work required to move a box a particular distance is 300 J. How much power is required to move the box in 3 seconds?
    7·1 answer
  • At what angle should the roadway on a curve with a 45 m radius be banked to allow cars to negotiate the curve at 12 m/s even if
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!