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A uniform ladder 6.58 m long weighing 460 N rests with one end on the ground and the other end against a perfectly smooth vertical wall. The ladder rises at 57.0 degrees above the horizontal floor. A 720 N painter finds that she can climb 2.85 m up the ladder, measured along its length, before it begins to slip.
What force does the wall exert on the ladder?
Find the friction force that the floor exerts on the ladder.
Find the normal force that the floor exerts on the ladder.
Assuming a fica tax rate of 8% on the first 106,800 in wages, and a federal income tax rate of 20% on all wages, illustrate what would be an employee's net pay for the year if he earned 108,000?
Calculate the work done on a gas, the change in internal energy of the gas, the heat added to the gas, and the change in entropy of the gas when 1.12 moles of oxygen
What is the angular separation of two spectral lines of wavelengths 446 nm and 398 nm formed in order m=2 with a 360 line/mm grating
A jogger travels a route that has two parts. The first is a displacement of 2.00 km due south, and the second involves a displacement that points due east.
The cable of the 1900 kg elevator cab shown the figure snaps when the cab is at rest at the first floor, where the cab bottom is a distance d = 4.7 m above a spring of spring constant k = 0.18 MN/m. Find the speed of the cab just before it hits the..
An automobile tire has a radius of 0.430 m, and its center moves forward with a linear speed of v = 14.0 m/s. Determine the angular speed of the wheel
1. starting from rest a proton falls through a potential difference of 2700 v. what speed does it acquire?2. a long
A 0.39 V potential di?erence is maintained across a 1.7 m length of tungsten wire that has a cross-sectional area of 0.85 mm2, What is the current in the wire
A straight horizontal garden hose 22.0 m long with an interior diameter of 1.10 cm is used to deliver 20oC water at the rate of 0.470 liters/s.
A uniformly charged sphere has a potential of 490 V on it's surface. At a radial distance of .24m from this surface the potential is 120 V. What is the radius of the sphere
Suppose you consume 2000 Cal of food per day. Note that a food Calorie, with capital C, is one kilocalorie: 1 Cal = 1 kcal. How many watts of heat and work can you do
A circular saw blade of diameter 0.175m starts from rest. In a time interval of 5.60s it accelerates with constant angular acceleration to an angular velocity of 140rad/s
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