1. A cruise ship stops briefly at a harbour at 6 a. m., when it is low tide. All the passengers on the
ship alight. At noon, Marie observes that the ship floats one metre higher in the harbour than
it did in the morning,
(a) Name a part of the ship where a contact force acts.
a
(b) Marie is the first passenger to alight in the morning and the last to board at noon.
She formulates a hypothesis that the ship floats lower in the morning because it is fully
loaded with passengers.
How could Marie test her hypothesis?

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

The least penetrating form of radiation is