Answer:
All are not true.
Explanation:
Sound needs medium to travel.
sound speed is fastest in solids.
Answer:
d = 186.3 m
Explanation:
Given that,
Speed of Matthew 3.45 m/s due eastward
It takes 54 seconds to walk to the store.
We need to find the distance covered. The product of speed and time is equal to the distance covered.
d = vt
Putting all values,
d = 3.45 m/s × 54 s
d = 186.3 m
Hence, he will cover a distance of 186.3 m.
I need points sorry so idek the answer so u will have to ask someone else
Potential energy = (mass) x (gravity) x (height)
1,568 J = (40 kg) x (9.8 m/s²) x (height)
Divide each side
by 392 Newtons: Height = (1,568 N-m) / 392 N
= 4 meters .
That all depends on what kind of quantity you are graphing.
It might be speed, temperature, altitude, relative humidity,
barometric pressure, etc. Each would use a different unit.