A 1470-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16050 N on the submarine, as well as a downward resistive force of 1130 N. What is the submarine's acceleration? Units ola^2 A

The result you got above should be x(t) = e(C + Dt), eq 77. This introduces a new solution to the differential equation of motion, namely x(t) = Dte. Show directly that this is a solution of eq. 47 for y/2 = @.

A car has a mass of 2,600 kg and accelerates at 2.5 m/s². What is the magnitude of the net force exerted on the car? Your Answer: Answer units

At the grocery store you place a pumpkin with a mass of 10.5 lb on the produce spring scale. The spring in the scale operates such that for each 4.7 lbf applied, the spring elongates one inch. If local acceleration of gravity is 32.2 ft/s², what distance, in inches, did the spring elongate? X = i inches

A micro-transporter moves from one side of an evacuated chamber to another. It is powered by equal-magnitude, opposite-sign charges Q and -Q on top of two station points, as shown in (Figure 1). The transporter's mass is 1.0 g and it is carrying a positive charge of 9.0 x 10-10 C. The figure shows a micro-transporter located between two stations on a horizontal surface. Figure The left station has charge plus upper Q. The right station has charge minus upper Q. The transporter carries positive charge q. The transporter is 6.0 millimeters from the left station and 36.0 millimeters from the right station. +Q Station ( + Station 6.0 mm 36.0 mm

A 170-kg granite rock (r = 2700 kg/m3) is dropped into a lake. A man dives in and tries to lift the rock. Determine how much force the man needs to apply to lift it from the bottom of the lake. Do you think he can do it?

1.3 f a system is isolated: a. The velocities of all objects must sum to exactly zero. b. Sum of all the forces must be 3.14159 Newtons c. The vector sum of all external forces acting on the system must be zero. d. It will interact with the external environment.

Suppose an airline allows a maximum of 27 kg for each suitcase a passenger brings along. (a) What is the weight in newtons of a 27 kg suitcase? N (b) What is the weight in pounds? Ib

A student attaches a bucket to a cart resting on a 15° incline. The different force acting on the objects are: T: Tension of the strings; N: Normal Force; f: any possible friction; W1: weight of cart; and W2: weight of bucket cart T T bucket fk 15° V W1 67. The bucket is filled with water until the cart starts to move up the incline at a constant velocity. Which one(s) of the following relationships between forces is/are correct? a. W, >T > f b. W, >T > f +W, sin 15° c. W, =T > f d. W, = T = f +W, sin15° 2 2 2 68. Then, the water is replaced by equal volume of sand. Now, which one(s) is/ are correct? a. W, >T > f b. W, >T > ƒ +W, sin15° c. W, =T > f d. W, = T = f +W, sin15° 2 2 2 2

A lift weighing 30.0 kN moves upward. Calculate the tension in the cable if the lift is:a) accelerating at a rate of 1.5 ms−2b) decelerating at a rate of 1.5 ms