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1 year ago

This reaction represents cellular respiration. What happens to the energy released from glucose during this reaction?.

1 answer:

6 0

The energy released from glucose during this reaction is used and also wasted. Some of the energy is used as work while some amounts are used in other processes or stored for transfer to other organisms. Also, some of the energy is wasted in the form of heat.

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N an experiment, researchers want to determine if the __________ variable causes changes in the __________ variable.

chubhunter [2.5K]

independent; dependent

7 0

4 years ago

Read 2 more answers

Charlie Brown kicks a football at 20.5 m/s at 31.0°. It lands on flat ground 2.15 s later. How far away did it land? (Unit = m)

yarga [219]

Answer:

distance, x = 38.17 m

Given:

velocity of the football, v = 20.5 m/s

football projected at an angle, $\theta = 30^{\circ}$

Period of flight, T = 2.15 s

Solution:

Since, the velocity is projected at some angle, so it can be resolved in horizontal and vertical components:

vertical component, $u_{v} = usin\theta$

horizontal component, $u_{h} = ucos\theta$

the component responsible to cover certain distance is $u_{h} = ucos\theta$

Therefore, the distance covered by the football, x is given by:

$x = ucos\theta \times T$

⇒ $x = 20.5cos30^{\circ}\times 2.15$

x = 38.17 m

7 0

4 years ago

A student standing in a canyon yells "echo", and her voice produces a sound wave of frequency of f = 0.61 kHz. The echo takes t

klasskru [66]

Answer:

$d=627.9\ m$ is the distance from the obstacle of reflection.

wavelength $\lamb=0.5279\ m$

Explanation:

Given that:

frequency of sound, $f=610\ Hz$

time taken for the echo to be heard, $t=3.9\ s$

speed of sound, $v=322\ m.s^{-1}$

We know,

$\rm distance = speed \times time$

<em>During an echo the sound travels the same distance back and forth.</em>

$2d=v.t$

$2d=322\times 3.9$

$d=627.9\ m$ is the distance from the obstacle of reflection.

<u>Now the wavelength of sound waves:</u>

$\lambda=\frac{v}{f}$

$\lambda=\frac{322}{610}$

$\lamb=0.5279\ m$

3 0

3 years ago

Frictional forces acting on an object are often converted into energy,

Alinara [238K]

Thermal energy because friction moves along an object and loses energy due to heat

3 0

3 years ago

Struggling with this. Can you help?

pishuonlain [190]

Answer:

Unclear without more information

Explanation:

This is about transfer of energy. If you assume there is no energy lost to the environment (virtually impossible) - then all of the potential energy at the beginning would be transferred to kinetic energy along the route.

So, assuming that the rollercoaster has a velocity of 0 m/s at point A, then you can calculate the potential energy using: $Ep =mgh_A$

At the point D, you would assume that the energy is split between some kinetic energy and some potential energy. So, we could say that the total energy is the sum of these: $Etot=Ep+Ek=mgh_{D} +\frac{mv^2}{2}$

If we assume all energy is transferred (ie. no energy lost to friction/heat etc) then we can equate these two and solve:

$mgh_A=mgh_{D} +\frac{mv^2}{2}\\\\h_D=\frac{(2gh_A-v^2)}{2g} =22.4$

However, this answer seems unlikely given the drawing - which implies that there is perhaps more information that is missing??

6 0

3 years ago