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oee [108]
3 years ago
8

How much mass energy could be obtained from the complete conversion of a 235 g hamburger?

Physics
1 answer:
Radda [10]3 years ago
8 0
E = mc²
E = 0.235 kg · (3×10⁸ m/s)² = 0.235 · 9×10¹⁶  kg·m/s²
E = 2.115×10¹⁶ J
The answer is d) 2.12×10¹⁶ J
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A high-speed flywheel in a motor is spinning at 500 rpm when a power failure suddenly occurs. the flywheel has mass 40.0 kg and
tangare [24]
<span>The flywheel is solid cylindrical disc. Moment of inertial = ½ * mass * radius^2 Mass = 40.0 kg Radius = ½ * 76.0 cm = 38 cm = 0.38 meter Moment of inertial = ½ * 41 * 0.36^2 Convert rpm to radians/second The distance of 1 revolution = 1 circumference = 2 * π * r The number of radians/s in 1 revolution = 2 * π 1 minute = 60 seconds 1 revolution per minute = 2 * π radians / 60 seconds = π/30 rad/s Initial angular velocity = 500 * π/30 = 16.667 * π rad/s 170 revolutions = 170 * 2 * π = 340 * π radians The flywheel’s initial angular velocity = 16.667 * π rad/s. It decelerated at the rate of 1.071 rad/s^2 for 48.89 seconds. θ = ωi * t + ½ * α * t^2 θ = 16.667 * π * 48.89 + ½ * -1.071 * 48.89^2 2559.9 - 1280 θ = 1280 radians</span>
4 0
3 years ago
In order for water to condense on an object, the temperature of the object must be ______ the dewpoint temperature.
enyata [817]

Answer:

at   ( or below)

Explanation:

at the dewpoint.......water will condense out of the air onto the surface

7 0
2 years ago
A bullet is fired at a speed of 2434 ft/s. what is this speed expressed in millimeters per minute?
NikAS [45]
44,512,992 mm/m. Hopefully...
4 0
3 years ago
Some strongly electric fish will stun prey by generating an electric current that runs
Bezzdna [24]

Answer: when fish is stunning it's prey it's cause electric shock to the prey that's make it die and be able to be utilized by electric eel(fish generate electric surround)

4 0
3 years ago
If you unbend a paper clip made from 1.5 millimeter diameter wire and push one end against the wall, what force must you apply t
vampirchik [111]

Answer:

The force is  F =  21.48 \ N

Explanation:

From the question we are told that

   The diameter of the wire is  d =  1.5 \  mm  =  1.5 *10^{-3} \ m

     The  pressure is  P   =  120 \ a.t.m  =  120  * 101.3 *10^{3} = 12156000 Pa

Generally the radius of the of the wire is  

     r =  \frac{d}{2}

=>    r =  \frac{ 1.5 *10^{-3}}{2}  

=>    r =  7.5 *10^{-4} \  m

The Area is evaluated as

     A =  \pi  r^2

=>    A =  3.142 * 7.5 *10^{-4}

=>    A = 1.7673*10^{-6} \  m^2

Generally pressure is mathematically represented as

     P  =  \frac{F}{A }

=>   F =  P* A

=>    F =  12156000  * 1.767*10^{-6}

=>    F =  21.48 \ N

6 0
3 years ago
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