Wave speed is always (frequency) x (wavelength)
Speed = (450 /sec) x (0.52 m)
= 234 m/sec .
The momentum of daemon and his cart as he rolls immediately after they are no longer in contact 81.69kgm/s.
<h3>What is momentum ?</h3>
In Newtonian physics, an object's linear momentum, translational momentum, or simply momentum is defined as the product of its mass and velocity. It has both a magnitude and a direction, making it a vector quantity. If an object has mass m and velocity v, then its momentum p is given by
p = mv
Therefore, the Newton-second may be used as the unit for momentum (Ns). In the CGS system, the unit of momentum is the gram-centimeters per second (gcm/s), where the mass is measured in grams and the velocity in centimeters per second.
Total momentum of the system = momentum of christine's cart + momentum of daemon's carttotal momentum of the system
= 37.8 kgm/s + 43.89kgm/s
= 81.69kgm/s.
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Answer:
D
Explanation:
D, Mass is the amount of matter in an object, it is measured in kg and does not change with gravity. Weight is the effect of gravity on mass, it is measured in Newtons (as it is a force) and changes with gravity. E.g. If you went to the moon your weight would change due to the change in gravity but your mass would stay the same.
Hope this helped!
Before entering the closed room, the cert members should assess
the situation first. They should gather information in order to determine if it’s
safe to go or if needed assistance to the current situation. They should consider some probabilities
before they establish the decision and take an action. Especially to the current situation where there is a possibility that the smoke that they smell is coming from the room and the reason may be because there is a fire. Assessing the situation before taking an action immediately is a must, in order to prevent further harm.
