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faltersainse [42]
3 years ago
12

How long would it take a 500. W electric motor to do 15010 J of work?

Physics
1 answer:
KIM [24]3 years ago
8 0
Time = energy / power = 15010 / 500 = .... seconds
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The OBD-II catalytic converter monitor uses _______ sensor(s) to monitor catalytic converter efficiency.
oksano4ka [1.4K]
C comment for an explanation
8 0
3 years ago
Two speakers emit the same sound wave, identical frequency, wavelength, and amplitude. What other quantity would be necessary to
Komok [63]

Answer:

Phase Difference

Explanation:

When the sound waves have same wavelength, frequency and amplitude we just need the phase difference between them at a particular location to determine whether the waves are in constructive interference or destructive interference.

Interference is a phenomenon in which there is superposition of two coherent waves at a particular location in the medium of propagation.

When the waves are in constructive interference then we get a resultant wave of maximum amplitude and vice-versa in case of destructive interference.

  • For constructive interference the waves must have either no phase difference or a phase difference of nλ, where n is any natural number.
  • For destructive interference the waves must have a phase difference of n×0.5λ, where n is any odd number.

6 0
3 years ago
A flat disk, a solid sphere, and a hollow sphere each have the same mass m and radius r. The three objects are arranged so that
chubhunter [2.5K]

Answer:

Explanation:The rotational inertia of any object depends directly on the distance the mass is from the axis of a rotating object

Having more mass at the sides will increase the rotational inertia of the object that is why a Hollow sphere having same M and R as the solid one has more rotational inertia as it has more mass at the sides.

The  sphere have some mass at the center but most of its mass is closer to its radius and thus have more inertia than flat Disk.

The same relation exist between a flat disk and hollow sphere. The hollow sphere have some mass at the center but most of its mass is closer to its radius and thus have more inertia.

The rotational of the objects can be calculated by these equations

FlatDisk=\frac{1}{4} MR^2\\Sphere=\frac{2}{5} MR^2\\HollowSphere=\frac{2}{3} MR^2\\

4 0
3 years ago
The human body is 65% oxygen by mass. If a person has a mass of 75.0 kg, what is the mass oxygen in his body?
Gekata [30.6K]
65% x 70 = 45.5 
The mass of oxygen in his body is 45.5 kg
4 0
3 years ago
A periodic wave with wavelength<br> - 2 m has frequency f = 4 Hz.<br> What is the wave's speed?
Sunny_sXe [5.5K]

Answer:

-8m/s

Explanation:

v=wavelength*f=-2*4=-8m/s

3 0
3 years ago
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