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
goldenfox [79]
3 years ago
12

please help How much heat does it take to raise the temperature of 9.0 kg of wood from 12C to 97C? The specific heat of wood is

1.68 kJ/(kgC). Use Q = mc(Tf - Ti). A. 760 kJ B. 1300 kJ C. 180 kJ D. 1500 kJ
Physics
2 answers:
AlladinOne [14]3 years ago
7 0

Answer:

Q = 1300 kJ

Explanation:

As we know that heat require to change the temperature of the object is given as

Q = mC \Delta T

here we know that

m = mass = 9 kg

C = 1.68 kJ/kg

\Delta T = 97 - 12

\Delta T = 85 degree C

now from above formula we will have

Q = 9\times 1.68 \times 10^3 \times 85

Q = 1300 kJ

Ahat [919]3 years ago
5 0
Q=mc(Tf-Ti)
   = (9Kg)(1.68 KJ/KgC)(97-12)
   = 1285.2 KJ
   ~ 1300 KJ
You might be interested in
A sports car moving at constant speed travels 164 m in 13.77 s. If it then brakes and comes to a stop in 3.6 s. What is its acce
Sergio039 [100]

Answer:

a = - 0.3376 g's

Explanation:

The sports car has a constant speed when travelling. Covered 164 m in 13.77 s. Thus, speed = 164/13.77 m/s

It brakes and now comes to a stop in 3.6 s.

Thus final velocity = 0 m/s

Formula for acceleration is;

a = (v - u)/t

a = (0 - (164/13.77))/3.6

a = -3.308 m/s²

In terms of g's", where 1.00 g = 9.80 m/s², we have;

a = -3.308/9.8 g's

a = - 0.3376 g's

4 0
3 years ago
How are the ways in which the pluton and pegmatite minerals form similar?
Rasek [7]
There both minerals and there both
8 0
4 years ago
ILL GIVE BRAINLIEST!! please help and answer correctly!
Hunter-Best [27]
Answer: B

Action and reaction forces act on the same object and go to the same direction
6 0
3 years ago
List the three types of symbiotic relationships. For each type of symbiotic relationship, explain how the two organisms are affe
Virty [35]
<span>The three major types of symbiosis are mutualism, where both species benefit, commensalism, where one species benefits and the other is unaffected, and parasitism, where one species benefits and the other is harmed. Symbiotic relationships can occur within an organism's body or outside of it.                                                                                                                                                                              </span><span>Examples of mutualism include the relationship between single-celled organisms or animals that incorporate algae into their bodies. They give the algae necessary nutrients, and in return receive chemical energy from the photosynthetic algae. Animals that have this sort of relationship include some sponges, sea anemones and clams. Examples of commensalism include remora fish attaching to the bodies of sharks and eating scraps of food that escape their jaws, and barnacles living on the jaws of whales with a similar feeding strategy. Plants have commensal relationships as well, such as many orchids that grow on taller plants and benefit from the additional sunlight they obtain, without actually stealing nutrients from the host plant. Parasitic relationships are many, and parasites include all disease-causing organisms. This category also includes insects such as fleas that suck the blood of hosts externally. Parasitism is a very efficient strategy for organisms, and parasites often lose many of the features of non-parasitic life forms, instead relying on their hosts for many of the functions of life.</span>
5 0
3 years ago
Which of the following represents a chemical property of hydrogen gas? A) It is gaseous at room temperature. B) It is less dense
ehidna [41]

Answer:

C) It reacts explosively with oxygen.

Explanation:

Physical properties are usually those that can be observed using our senses such as color, luster, freezing point, boiling point, melting point, density, hardness and odor.

What are the Chemical Properties of Hydrogen? They are the characteristics that determine how it will react with other substances or change from one substance to another.

3 0
4 years ago
Other questions:
  • Johnson made a hole at the bottom of a plastic bottle containing water. However, he noticed that the water did not flow out from
    6·1 answer
  • Calculate the number of vacancies per cubic meter at 1000°C for a metal that has an energy for vacancy formation of 1.22 eV/atom
    14·1 answer
  • A 310-N child is in a swing that is attached to a pair of ropes 2.10 m long. Find the gravitational potential energy of the chil
    6·1 answer
  • Three blocks are pushed along a rough surface by a force with magnitude P, as shown above. Fc is the magnitude of the contact fo
    12·1 answer
  • True or false velocity has only magnitude
    6·1 answer
  • Find the total displacement of a mouse that travels 1.0m north and then 0.8m south.
    13·1 answer
  • How much tension must a rope withstand if used to accelerate a 960-kg car from rest horizontally along a frictionless surface to
    6·1 answer
  • I REALLY NEED HELP PLEASE!!! CAN SOMEONE ANSWER THIS? At 0 ºC, some amount of energy is required to change 1 kg of water from a
    10·2 answers
  • A car traveling on the highway at 15 m/s accelerates at 3.0 m/s2 for 5.0 s. What is its final velocity?
    13·1 answer
  • Cual es el propósito del ser desde su creación
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!