A net force of -1,000 Newtons is delivered to the object over a time of .02 seconds. Calculate the new velocity of the object.
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(-20) / (the object's mass).
Call it a crazy hunch, but I can't shake the feeling that there was more
to the question before the part you copied, that mentioned the object's
mass, and its velocity before this force came along.
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You're going to have to give me the choices.
I'm pretty sketchy on that subject.
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cos(42°) = x-component / F ⇒ x-component = Fcos(42°) = 112N*0.743 = 83.2 N
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Electromagnetic waves travel at in vacuum
The fundamental properties that can be attributed to waves are;
- reflection
- refraction
- diffraction
- interference.
Other properties are ;
- wavelength
- frequency
- amplitude.
- A waves can be regarded as one that disturb the transfers energy.
- what all this electromagnetic waves has in common is their ability of them to travel in the vacuum with the same speed.
- Their speed in the vacuum is 300,000,000 metres per second which is the speed of light.
Electromagnetic radiation can be regarded as radiation that has waves of the electromagnetic field, which propagate through the space, and it moves along with electromagnetic radiant energy.
- Electromagnetic waves that are part of electromagnetic spectrum are:
- radio waves
- microwaves
- infrared light
- ultraviolet
- X-rays,
- gamma rays.
- Wavelength can be regarded as distance that exist between identical points i.e the adjacent crests of the adjacent cycles in that waveform
- Frequency can be explained as the rate of vibration of the wave electromagnetic field per seconds.
- The amplitude of wave can be regarded as distance from the centre line to the bottom of a trough, or to the top of a crest.
Therefore, electromagnetic waves travel at 300,000,000 metres per second in vacuum.
299,792,458 meters per second
in vacuum.
Answers
Here are the following choices:
A) at either A or B.
B) midway between A and B.
C) 1/3 of the distance from A to B.
D) 1/4 of the distance from A to B.
E) 1/ times the distance from A to B.
Final answer:
The kinetic energy of a mass oscillating on a vertical spring is at a minimum when the object is at the extreme points of its motion. This is because the object has momentarily stopped moving, leading to zero kinetic energy. All the energy is instead stored as potential energy in the spring.
Explanation:
In the case of a mass oscillating on a vertical spring, the kinetic energy of the object is at a minimum when the object is at its extreme points, i.e., when it is at points 'a' or 'b'. This is because, at these positions, the object momentarily comes to rest before reversing its direction, thereby having a velocity (and hence kinetic energy), which is proportional to the square of the velocity, of zero. The energy at these points is mainly stored in the spring as potential energy.
At these extreme points, we have a situation where the potential energy (U) is maximum and the kinetic energy (K) is equal to zero. At the midpoint position x = 0, the entire energy is kinetic while the potential energy in the spring is zero, which suggests that the kinetic energy is minimum at the extreme positions.
This property of kinetic and potential energy fluctuating between each other is a common characteristic of simple harmonic motion.
Learn more about Kinetic Energy here:
#SPJ3
4 minutes. What is its speed?
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It's speed is exactly 6.4 meters per 4 minutes.
In the more familiar units, that's
(6.4 m / 4 min) = 1.6 meters per minute
(1.6 m / min) (100 cm/m) ( 1 min / 60 sec) = 2-2/3 cm per sec.
(1.05 inch per second, rounded)
(160.3 furlongs per fortnight, rounded)
The speed of the tortoise can be calculate as follows:
where
S is the distance travelled by the tortoise
t is the time taken
In this problem, S=6.4 m, while we should convert the time into seconds:
Substituting the numbers into the equation, we find the speed:
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112444811Explanation:
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