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
Rom4ik [11]
2 years ago
13

A toy car (0.50 kg) runs on a frictionless track and has an initial kinetic energy of 2.2 J, as the drawing shows. The numbers b

eneath each hill give the heights of the hills. Over which of the hills will the car coast?
Physics
1 answer:
steposvetlana [31]2 years ago
6 0

Answer:

Height will be equal to 0.4489 m

Explanation:

We have given mass of the toy m = 0.50 kg

Initial kinetic energy K = 2.2 J

We have to fond the height of the hill over which car roast

When car will roast the hill its kinetic energy will be converted into potential energy and at maximum height all kinetic energy will be converted into potential energy

So at maximum height mgh=K

Acceleration due to gravity g=9.8m/sec^2

So 0.50×9.8×h = 2.2

h = 0.4489 m

You might be interested in
____ are solid while lines stretching across one or more lanes in the same direction, indicating the proper place to come to a s
Natalka [10]
Stop lines are solid white lines painted across the traffic lanes at intersections and pedestrian crosswalks, indicating the exact place to stop.
8 0
3 years ago
Where do tadpoles live? a. on land c. both on land and water b. in water d. none of the above
Bezzdna [24]
Tadpoles live in water
5 0
3 years ago
Read 2 more answers
A weight lifter lifts a dumbbell a certain height in 2.0 s, while a competitor does the same workin 1.0 s. Compared to the power
Aloiza [94]

Answer:

a. one-half as great

Explanation:

The power developed by the first lifter is one-half as great as that of the second person.

  Power is defined as the rate at which work is done;

          Power  = \frac{workdone}{time}

Since the two lifters do the same work at different time, let us estimate their power;

       P₁ = \frac{workdone}{2}                     P₂ = \frac{workdone }{1}

   We see that for P₁, power is half of the work done whereas in P₂ power is the same as the work done.

Therefore,

           The power of the first weight lifter is one-half the second lifter.

4 0
2 years ago
Multiple-Concept Example 6 reveiws the principles that play a role in this problem. A nuclear power reactor generates 2.3 x 109
r-ruslan [8.4K]

Answer:

change in mass = 2.41*10^{8}kg

Explanation:

The change in the mass can be computed by using the relation

E=\Delta mc^2\\\Delta m=\frac{E}{c^2}(1)

That is, the energy liberated comes from the mass of the nuclear fuel. The energy generated in one year is

E=Pt=2.3*10^{9}\frac{J}{s}*1 year*\frac{365.25 day}{1 year}*\frac{24h}{1 day}*\frac{3600s}{1h}=7.25*10^{16}J

Hence, by replacing in the equation (1) you have  (c=3*10^{8}m/s)

\Delta m=\frac{7.25*10^{16}J}{3*10^{8}\frac{m}{s}}=2.41*10^{8}kg

HOPE THIS HELPS!!

3 0
3 years ago
Read 2 more answers
The Acorn Insurance Company charges $3.50 for each unit of coverage under a block of 1-year term life insurance policies. The an
ICE Princess25 [194]

Answer:

$175

Explanation:

Insurance premium is expressed as a rate $1000

($3.50 per $1000)

Therefore;

Annual premium= $50000x$3.50/$1000

= $175

8 0
3 years ago
Other questions:
  • skateboarder, starting from rest, rolls down a 13.5 m ramp. When she arrives at the bottom of the ramp her speed is 7.37 m/s. If
    9·1 answer
  • The total resistance of a circuit is 25. The voltage drop across the battery is 6.0v. What is the current
    5·2 answers
  • Calculate the density of the football. Use the formula D = m/V where D is the density, m is the mass, and V is the volume. Recor
    10·2 answers
  • A police car waits in hiding slightly off the highway. A speeding car is spotted by the police car traveling at speed s = 27.6 m
    13·1 answer
  • The diameter of Saturn is nearly ten times that of Earth. However, the density of Saturn is much less than that of Earth. What i
    6·1 answer
  • The uncertainty in position of a proton confined to the nucleus of an atom is roughly the diameter of the nucleus. If this diame
    6·1 answer
  • A marble and a basketball are rolling toward you at the same velocity. If the same amount of force is used to stop both objects,
    12·1 answer
  • Riddle of the day<br><br> What gets wet while drying?
    11·2 answers
  • Question 5
    6·1 answer
  • 9. If a car travels 18,000 meters in 30 minutes, what is its average speed?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!