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
kifflom [539]
3 years ago
6

The burning of 1.0 g of coal produces 35 000 joules of energy. How many kcals are produced?

Physics
1 answer:
sergeinik [125]3 years ago
8 0
I got the 1.0g of coal producves 35,000 joules which is also 8.36 kcals
You might be interested in
A bike rider pedals with constant acceleration to reach a velocity of 7.8 m/s over a time of 4.2 s. during the period of acceler
Artyom0805 [142]

To calculate the initial velocity of the bike, we use the following equation

d=\frac{1}{2} (u+v)t.

or

u=\frac{2d}{t} -v

Here, u is initial velocity, v is final velocity, t is the time and d is the distance covered by bike.

Given, u =7.8 m/s,d= 19 m and t=4.2 s.

Substituting these values in above equation, we get

u = \frac{2 \times 19}{4.2 \ s} -7.8 m/s = 9.05 \ m/s - 7.8 \ m/s \\\\ u= 1.2 m/s.

Thus, the initial velocity of the bike is 1.2 m/s.

3 0
3 years ago
A roller coaster pushes a 25 kg person upward with a force of 300 N. What is the acceleration?
vlada-n [284]
300N/25 kg= divide them for the answer
8 0
3 years ago
What is the density of an object with mass of 60 g and a volume of 2cm3
Artemon [7]

Answer:

D=mass /volume

=60/0.002

=30000

4 0
2 years ago
If 100 J of electrical energy enter the bulb and 5 J of light energy leave the bulb, how many joules of heat energy leave the bu
Novay_Z [31]

As per energy conservation we know that

Energy enter into the bulb = Light energy + Thermal energy

so now we have

energy enter into the bulb = 100 J

Light energy = 5 J

now from above equation we have

100 = 5 + heat

Heat = (100 - 5) J

Heat = 95 J


6 0
3 years ago
you run 2.5m/s horizontally from the edge of a cliff and 3 sec . later hit the ground, how high is the cliff?
bonufazy [111]
The cliff would be 7.5m high
3 0
3 years ago
Other questions:
  • A Tennis ball falls from a height 40m above the ground the ball rebounds
    13·1 answer
  • These three members of the Noble gas family all have one property in common because they are gases at room temperature. That is
    12·2 answers
  • A billiard ball moves with 3 kg⋅m/s of momentum and strikes three other billiard balls. What is the total momentum of the balls
    12·1 answer
  • Which special effects technique is being used in television weather reports in which meteorologists stand in front of moving map
    6·2 answers
  • One strategy in a snowball fight is to throw
    6·1 answer
  • Identify one harmful environmental change that occurs when a volcano erupts.
    11·1 answer
  • What does sound need to travel?​
    12·2 answers
  • a wire is carrying a 2.45 A current. at what distance from the wire is the magnetic field 1.00x10^-6t
    6·1 answer
  • What is the angle of refraction when a ray of light passes frm ethanol to air
    15·1 answer
  • a 1000 khz am radio station broadcasts with a power of 20 kw. how many photons does the transmitter antenna emit each second
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!