Rainbows on an oily street after it's been raining. The colors in floating bubbles. Rainbows in the sink when using dish-soap.
Answer:
Speed = 72.76mph
Explanation:
east direction signifies +
Therefore,
1515E -1125(45) = -2640
F = -2640×0.75 = -1980lbs
so,
-1980lbs = Ma
but m = 2640×g where g = 32.2 ft/s²
so,
a = -(1980/2640g) = -0.75×g = -24.15ft/s² = dv/dt
0 = V-24.15t
V =24.15t
22.5 = Vt -12.07t²
22.5 = 24.15t² - 12.07t² = 12.07t²
t = 1.37 seconds
Therefore,
V = 24.15 × 1.37 seconds = 33.1 ft/s
converting to mph gives
33.1 ft/s = 22.6 mph
now back to momentum
1515 E -1125(45) = 2640 V
1515 E = 50625+59664
Speed = 72.76 mph
Answer:
0.63m
Explanation:
Volume expansivity = change in volume/original volume×temp change
Volume expansivity p = 3x
p = ∆V/V∆t
x is the linear expansivity
Given
x = 6 x 10^-4
p = 3x
p = 3(6 x 10^-5)
p = 18×10^-5
Volume = 100m³
∆t = 45-10 = 35°C
Required
Change in volume ∆V
Substitute the given values into the formula
18×10^-5 = ∆V/100(35)
18×10^-5 =∆V/3500
∆V = 3500×0.00018
∆V = 0.63m
Hence the increase in volume of the Mercury is 0.63n
Explanation:
the notmal focrce stopped it.
Answer:
The acceleration is:
Explanation:
To answer this, we need to recall Newton's Second Law of motion, that states that an object of mass m would accelerate (change its state of uniform motion) proportional to the force (F) that is applied , and exemplified by the following equation:
From here, and using the given values for mass (m = 3 kg) and force (F = 9 N), we can derive the value of the acceleration as shown below (notice that since all quantities are given in SI units, the resulting acceleration will also be in Si units ():