The wind exerts a force of 251 N North on a sailboat, while the water exerts a force of 234 N West on the sailboat. What is the magnitude of the net external force on the sailboat?
when released, a bead slides without frictiondown a wire and amkes a loop-the-loop. of height 6m and radius 2m. what is its speed in m/s at the half way to the top of the circular loop as it loops the loop?
A 1500 kg automobile travels at a speed of 80 km/h along a straight concrete highway. Faced with an emergency situation, the driver jams on the brakes, and the car skids to a stop.
a .150 kg wire in the shape of a rectangle 1 m wide and 1.5 meter long with total resistance of .750 ohms. the rectangle is allowed to fall through a magnetic field directed perpendicular to the motion of the rectangle. the rectangle accelerates downward until it reaches a contant speed of 2 m/s...
A 42 kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 0.7 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.
A 17740 kg airplane lands with a speed of 81 m/s on a stationary aircraft carrier deck that is 115 m long. Find the work done by nonconservative forces in stopping the plane.
The deuteron may be described by the wave function: (r)= A[e^(- *r)-e^(- *r)]/r A, , and are constants. Find g(p), the corresponding momentum wave function using a Fourier transform.
an engine falls off an airplane flying at a speed of 280
an engine falls off an airplane flying at a speed of 280 m/s and altitude of 4500m. What is the horizontal distance the engine will travel before it hits the ground?
Muscles are attached to bones by means of tendons. The maximum force that a muscle can exert is directly proportional to its cross-sectional area at the widest point. We can express this relationship mathematically as , where (sigma) is a proportionality constant. Surprisingly, is about the...
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1. Can you show me step by step how to solve this problem?:
- The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
- (a) What is the average angular acceleration of the Earth?
- (b) If this average acceleration remains constant, in what year will the Earths rotation come to rest?
2. I do not understand this Ideal Gas Law and Kinetic Theory question. Can you help me set it up?
- A spherical balloon is made from a material whose mass is 3.00-kg. The thickness of the material is negligible compared to the 1.5-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305-degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19-kg/m^3. Find the absolute pressure of the helium gas