Answer:
The universal sign for choking is __________.
A.
two balled fists pressing the abdomen
B.
pointing at an open mouth
C.
two hands grasping the neck
D.
pretending to cough
Explanation:
Answer:
Forces between molecules
Explanation:
The tensions between molecules are the characteristic that explains variances in the specific heat capacity of two substances.
This means that a substance's specific heat capacity will increase or be higher the closer its atoms are bound together. As a result, it differs for the different states of matter, such as solid, liquid, and gas.
Answer:
W = 7.5 J
Explanation:
W = KE
W = ½mv² = ½0.6(5²) = 7.5 J
Niño, piedra y ascensor están todos en el mismo marco de referencia inercial.
los 2 m / s no son importantes.
Answer:
13.4s
Explanation:
t = usinx/g. (X= angle , u= initial velocity)
= (147×sin63)/9.8
=13.4
Answer
given,
frequency = 600 Hz
speed of sound = 343 m/s
wavelength =
λ = 0.572 m
for destructive interference
path difference = 
path difference = 
path difference = 0.286 m
b)
path difference will be equal to 0.286 m
the sound distance from the λ/2 from the first speaker will be out of phase with the sound at that first speaker.
Since the second speaker is described as being out of phase with the first, placing them λ/2 apart will make their sound constructively interfere.
