In this problem, we are already given the equation for height h in terms of time t. So, the only thing you would do is substitute h and solve for t. If the height is given as 1.414 m, then the solution would be:
h=−4.9t² <span>+ 9.1t +1.4
1.414 = </span>−4.9t² + 9.1t +1.4
−4.9t² + 9.1t - 0.014 = 0
Since this is a quadratic equation, there can be two answer for this equation. They are t = 1.859 seconds, -0.001537 seconds. Since the negative answer is impossible, the answer would be 1.859 seconds.
Answer:
0.91 g/cm³
Explanation:
Density: This can be defined as the ratio of mass of an object to its volume.
The mathematical expression for density is given as,
D = m/v .............................. Equation 1
Where D = Density of the ice cube, m = mass of the ice cube, v = volume of the ice cube.
v = l³
Where l = length of each side of the cube.
l = 1.38 in = (1.38×2.54) cm = 3.51 cm
v = 3.51³
v = 43.24 cm³
Given: m = 1.39 oz = (1.39×28.35) g = 39.41 g
Substitute into equation 1
D = 39.41/43.24
D = 0.91 g/cm³
Hence the density of the ice cube = 0.91 g/cm³
Answer:
D. 2JK3 + 3L2M --> 6LK + J2M3
Explanation:
It is the ratio of distance an object moves to the amount of time needed to travel the distance.
Option b.
Answer:
B
Magnified images will not be created.
Explanation:
I did it and this was the correct answer
