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2 years ago

Do energy drinks actually provide energy?

Physics

2 answers:

denis-greek [22]2 years ago

6 0

Answer:

Most energy drinks contain large amounts of caffeine, which can provide a temporary energy boost. Some energy drinks contain sugar and other substances. The boost is short-lived, however, and may be accompanied by other problems.

Explanation:

Phoenix [80]2 years ago

4 0

Answer:

kinda

Explanation:

You might be interested in

A car initially moving at 10 m/s accelerates to 20 m/s. By what factor does the momentum change?

marin [14]

Answer:

2 times

Explanation:

Given:

u = 10 m/s

v = 20 m/s

To Find:

Factor of change in Momentum = ?

Solution:

Final Momentum = mv

Final Momentum = m(20)

Final Momentum = 20m

Initial Momentum = mu

Initial Momentum = m(10)

Initial Momentum = 10m

Therefore, Factor of change in Momentum = 20m / 10m = 2 times

PLZ MARK ME AS BRAINLIEST!!!

6 0

2 years ago

At noon on a clear day, sunlight reaches the earth's surface at Madison, Wisconsin, with an average intensity of approximately 2

Makovka662 [10]

Answer:

The number of photons per second that strike the given area is 2.668 x 10⁸ photons/second

Explanation:

Given;

intensity of the sunlight, I = 2.00 kJ·s−1·m^−2

area of incident, A = 5.2 cm² = 5.2 x 10⁻⁴ m²

Energy of incident photons per second on the given area;

E = IA

E = (2000)( 5.2 x 10⁻⁴)

E = 1.04 J/s

Energy of a photon is given is by;

$E = \frac{hc}{\lambda} \\\\E = \frac{(6.626*10^{-34})(3*10^8)}{(510*10^{-9})}\\\\E = 3.898*10^{-19} \ J/photon$

The number of photons per second that strike the given area is;

$n = \frac{1.04 \ J/s}{3.898*10^{-19} \ J/photon} \\\\n = 2.668*10^{18} \ photons/second$

Therefore, the number of photons per second that strike the given area is 2.668 x 10⁸ photons/second

5 0

2 years ago

A 55.0-kg woman stands at the rim of a horizontal turntable having a moment of inertia of 540 kg · m2 and a radius of 2.00 m. Th

Gemiola [76]

Answer:

a) ω = 0.305 rad/s counterclockwise

b) W = 61.875J

Explanation:

The angular speed of the woman is:

$\omega_w=V_W/R = -1.5/2=-0.75rad/s$

By conservation of the angular momentum:

$(I_t+I_w)*\omega_o=I_t*\omega_t-I_w*\omega_w$ where ωo = 0

Solving for $\omega_w$ :

$\omega_w=I_w*\omega_w/I_t=m_w*R^2*\omega_w/I_t=0.305rad/s$

Work done by the woman is given by the variation on her kinetic energy:

$W=\Delta K = 1/2*m*V_w^2-1/2*m*Vo^2=1/2*55*1.5^2=61.875J$

7 0

2 years ago

A 110-kg football player running at 8.00 m/s catches a 0.410-kg football that is traveling at 25.0 m/s. Assuming the football pl

jasenka [17]

Answer: $8.062\ m/s$

Explanation:

Given

masss of football player $M=110\ kg$

Velocity of football player $u_1=8\ m/s$

mass of football $m=0.41\ kg$

velocity of football $u_2=25\ m/s$

Final velocity will be given by applying conservation of linear momentum

After catching the ball Player and ball moves with same velocity

$\Rightarrow Mu_1+mu_2=(M+m)v$

$\Rightarrow 110\times 8+0.41\times 25=(110+0.41)v$

$\Rightarrow 880+10.25=110.41\times v$

$\Rightarrow v=\frac{890.25}{110.41}=8.063\ m/s$

So, final velocity will be $8.062\ m/s$

5 0

3 years ago

At sea level, where g=9.80 m/s^2, a pendulum has a period of 1.000s. When you take it to the top of a mountain, its period is 0.

marysya [2.9K]

Answer:

The g at the top of the mountain is 9.820 m/s².

Explanation:

The period of simple pendulum is given as;

$T = 2\pi \sqrt{\frac{l}{g} }$

where;

T is period of the oscillation

g is acceleration due to gravity

l is length of the pendulum

$T = 2\pi \sqrt{\frac{l}{g} } \\\\\frac{T}{2\pi} = \sqrt{\frac{l}{g} }\\\\\frac{T^2}{4 \pi ^2} = \frac{l}{g}\\\\T^2 g = 4 \pi ^2 l\\\\let \ 4 \pi ^2 l = k\\\\T^2_{sea \ level} \ \times \ g_{sea \ level} = T^2_{top \ of \ mountain} \ \times \ g_{top \ of \ mountain}\\\\ g_{top \ of \ mountain} = \frac{T^2_{sea \ level} \ \times \ g_{sea \ level}}{T^2_{top \ of \ mountain} } \\\\ g_{top \ of \ mountain} = \frac{1^2 \ \times \ 9.8}{0.999^2} = 9.820 \ m/s^2$

Therefore, the g at the top of the mountain is 9.820 m/s².

7 0

2 years ago