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Ivenika [448]
3 years ago
7

A researcher studying the nutritional value of a new candy places a 4.10-gram sample of the candy inside a bomb calorimeter and

combusts it in excess oxygen. the observed temperature increase is 2.95 °c. if the heat capacity of the calorimeter is 43.80 kj·k–1, how many nutritional calories are there per gram of the candy?
Physics
1 answer:
SIZIF [17.4K]3 years ago
7 0
Do mathe kdidfs ayr f yiouy wikl gret gpod furaced. gockt gaveg jatg fdhvsafd  gofdjvf ggdsnbg
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James accelerates his skate board uniformly along a straight road from rest to 10 m/s in 4 seconds. What is James Acceleration?
lawyer [7]

Given:

u(initial velocity)=0

v(final velocity)= 10 m/s

t= 4 sec

Now we know that

v= u + at

Where v is the final velocity

u is the initial velocity

a is the acceleration measured in m/s^2

t is the time measured in sec

10=0+ax4

a=10/4

a=2.5 m/s^2

4 0
3 years ago
Scientists suspect that modern horses have different dietary habits than horses that lived long ago. What is the most reliable s
Arte-miy333 [17]
Welllllllllll I thinkkkkkk the answer is B
6 0
3 years ago
Read 2 more answers
Alex, parked by the side of an east-west road, is watching car P, which is moving in a westerly direction. Barbara, driving east
Alexxandr [17]

Answer:

v_{PB} = 130\ km/h

Explanation:

Since, Alex is at rest. Therefore, the speed measured by him will be the absolute speed of car P. Therefore, taking easterly direction as positive:

Absolute\ Velocity\ of\ Car\ P = v_{P} = -78\ km/h

And the absolute velocity of Barbara's Car is given as:Absolute\ Velocity\ of\ Barbara's\ Car = v_{B} = 52\ km/h

Now, for the velocity of Car p with respect to the velocity of Barbara's Car can be given s follows:

Velocity\ of\ Car\ P\ measured\ by\ Barbara = v_{PB} = v_{B}-v_{P}\\\\v_{PB} = 52\ km/h-(-78\ km/h)

v_{PB} = 130\ km/h

6 0
2 years ago
The friction that prevents an object from moving when a force is applied is ________ friction.
uranmaximum [27]
Static friction is what you are looking for.
Kinetic friction is the force exerted on an already moving object, slowing it down.
3 0
3 years ago
How can you increase the potential energy of a bouncing ball
ad-work [718]

Answer:

When you lift the ball, you are doing work to increase its gravitational potential energy. When you then release the ball, gravitational energy is transformed into kinetic energy as the ball falls. When the ball hits the floor, the ball's shape changes as it flattens against the floor.

Explanation:thats should be the way^^ in explaining

7 0
3 years ago
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