Children bring their jack-o-lanterns to the top of a tower and compete for accuracy in hitting a target on the ground. Suppose that the tower is 10.0 m high and the bull’s-eye is located
4.0 m from the launch point. If the pumpkin is thrown horizontally,
(a) (3 points) What initial launch speed is needed to hit the bull’s-eye?
(b) (3 points) How long will the pumpkin take to hit the bull’s eye?
(c) (3 1/4 points) What is the final velocity of the pumpkin as it strikes the bull’s eye?
(d) (3 1/ 4 points) At what angle does it strike the bull’s eye?

7. see worksheet 1 for values of variables x1, x2 and x3 and answer the following questions: a. for each variable find the mean, median, coefficient of skewness, range and population standard deviation. b. compared to variable x1, how are the mean and median affected by extreme values (outliers) seen in x2 and x3. c. is the median or mean the better measure of location for x2 and x3? explain. d. explain the differences in the magnitudes of the skewness coefficients for the three variables. e. what is the relationship between the range and standard deviation looking across the three variables?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge

What are known as the properties of substances that describe a substance et does not change that substances?