The crate has a mass of 50 kg and the coefficient of static friction between the crate and the plane is µs =0.25.

(a)determine the minimum horizontal force p required to hold the crate from sliding down the plane.
(b) determine the minimum force p required to push the crate up the plane

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

2select the correct answer. javed suffers from a severe food allergy. which device should javed always carry? a. inhaler b. epi pen c. nebulizer d. insulin pen

Describe the work performed by a ski lift in terms of kinetic and gravitational potential energy