Answer:
7?
Explanation:
Waves – disturbances caused by the movement of energy from a source through some medium. Floating Gull- Figure 10.1 – water is not moving – only the energy is moving through the water. Transfer of energy from water particle to water particle – circular path, an orbit Orbital waves – a wave in which particles of the medium (water) move in closed circles as the wave passes. ¾ These types of waves occur between fluids of different densities as well as between air/water. These waves are Progressive Waves – move forward through their medium. Parts of the wave: Wave Crest: highest Part of the wave Wave Trough: valley between wave crests Wave Period: time it takes for a wave to move a distance of one wave length. Wave Length: horizontal distance between two successive crests (or troughs) Wave Frequency: the number of waves that pass a fixed point per second Motion of the wave is negligible after ½ wavelength in depth Figure 10.3 indicates that water molecules in the crest of a passing wave move in the same direction as the wave, but molecules in the trough move in the opposite direction.
When a ball is thrown up by doing work, the velocity of the ball will be 2.6 m/s.
<h3>What is Work energy theorem?</h3>
It states that the Work done in moving a body is equal to the change in kinetic energy of the body
Kinetic energy = 1/2 mv²
Given is a ball of mass m = 0.750 kg and the work done on ball W = 2.50 J
The ball is initially at rest. So, initial velocity is zero. Then, change in kinetic energy will be
W= ΔK.E = K.Ef - K.Ei
According to work energy theorem, work done is
W = 2.5J = 1/2 x 0.750 x (v)² -0
v =2.6 m/s
Thus, the velocity of the ball is 2.6 m/s
Learn more about work energy theorem.
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b is your answers in this thread
Answer: A.) sensor
Explanation:
Homeostasis is the ability of the organism's inner body to regulate the internal environment in stable state with respect to the changes occurring in the external environment. It is usually done by the feedback controls.
The maintenance of homeostasis within the body is essential. The following are the factors which controls the homeostasis. These includes:
1. Stimulus: It generate a response. It is an external factor which brings change in the internal body of the organism.
2. Receptor/ sensor: It detects the external stimulus and responds to the change.
3. Control center: The information from the receptor travels along the afferent pathway towards the control center. The function of the control center is to determine the response and controls the action.
4. Effector: The information from the control center travels down the efferent pathway to the effector. The function of the effector is to balance the stimulus to regulate and maintain homeostasis.
Answer:
v = 2.41 m/s
Explanation:
Here net force on the Skater + snowball is zero
so here we can use momentum conservation for skater + snowball
now we have
so the final speed of skater will be 2.41 m/s