Answer:
<h2>a) -1.93m</h2><h2>b) +0.643</h2>
Explanation:
Image distance and focal length of a convex mirror is negative.
a) Using the mirror formula to determine the image distance;
f = focal length of the mirror = -5.40m
u = object distance from the mirror = 3.00m
v = image distance from the mirror
b) Magnification = image distance/object distance
Magnification = 1.93/3
Magnification = +0.643
<em>Note that we do not use the negative value of the image distance to calculate the magnification of the object</em>
Answer:
B.) if statistical results are significant
Explanation:
If a scientist accepts the null hypothesis, then there is enough evidence to reject the null hypothesis.
This means that the p-value is less than the significance level.
When the scientist accepts the alternative hypothesis, it means the statistical results are significant.
The correct answer is B.
I think you wrote 4900 twice so will use that as the distance. To solve this it is helpful to draw a picture. The drawing should be of a triangle. Since the driver is driving up at an angle, the 4900 ft will be the hypotenuse of the triangle. since we do not know the values of the other two sides of the triangle we cant solve for the altitude using Pythagorean theorem but we can solve using the sine function on our calculator. As sine of angle is equal to opposite over hypotenuse(sinθ=opposite/hypotenuse). Having θ and the hypotenuse we can solve for opposite or the altitude. using some algebra we get hypotenuse*sinθ=opposite or altitude. now to plug everything in and solve: 4900 ft*(sin(2°))=opposite or altitude=171 ft
Answer:
Spectra type M
Explanation:
mass spectrum is simply an intensity vs. m/z (mass-to-charge ratio) plot representing a chemical analysis. Hence, the mass spectrum of a sample is a pattern representing the distribution of ions by mass (more correctly: mass-to-charge ratio) in a sample. It is usually acquired using an instrument called a mass spectrometer. Not all the mass spectra of a given substance are same.