Answer:
Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum. Compared with human vision, these snakes can sense electromagnetic waves that have: a lower frequency and a shorter wavelength. a higher frequency and a longer wavelength.
Explanation:
The mass slows to a rest from an initial speed of 10.0 m/s in a matter of 1.50 s. If we assume constant acceleration, then the mass has acceleration a such that
0 = 10.0 m/s + a (1.50 s) ⇒ a ≈ -(10.0 m/s)/(1.50 s)
The net force acting on the mass as it slows down is
∑ F[horizontal] = -F[friction] = ma
where m = 15.0 kg, and we take the direction in which friction is acting to be negative. Then
-F[friction] = -(15.0 kg) (10.0 m/s)/(1.50 s) ⇒ F[friction] = 100 N
Answer:
Volume of 80% pure antifreeze used = 180 gallons.
Volume of water to be used = 240 - 180 gallons = 60 gallons
Explanation:
Let the volume of 80% pure antifreeze used to make 60% pure antifreeze = x gallons
The volume of 60% pure antifreeze = 240 gallons
For 80% pure antifreeze:
C₁ = 80% , V₁ = x gallons
For 60% pure antifreeze :
C₂ = 60% , V₂ = 240 gallons
Applying,
C₁V₁ = C₂V₂
80×x = 60×240
x = 180 gallons
<u>Thus , volume of 80% pure antifreeze used = 180 gallons.</u>
<u>Volume of water to be used = 240 - 180 gallons = 60 gallons</u>
At time t = 0 the velocity is v1. Therefore C1 = v1 and C2 = x1. Equations (1), (2), (3), and (4) fully describe the motion of particles, or bodies experiencing rectilinear (straight-line) motion, where acceleration a is constant.