How high is the tree to the nearest tenth of a meter
To calculate the height of a tree, susie measures the angle of elevation from a point A to be 34 deg. she measures her distance to be 8 m from the base of the tree. How high is the tree to the nearest tenth of a meter?
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The surface water is at a temperature of 25°C, while the bottom of the pond is at 12°C. Find the rate at which energy is transferred by conduction from the surface to the bottom of the pond.
From a fixed point, a surveyor locates a pole at 215.6 ft due east and a bulding corner at 358.2 ft at 37.72 degrees north of east. What is the displacement of the building from the pole?
A 1.5-kg copper block is given an initial speed of 4.0 m/s on a rough horizontal surface. If the block absorbs 85% of its initial kinetic energy as internal energy, calculate its increase in temperature.
The medians of a right triangle that are drawn from the vertices of the acute angles have lengths of 2√3 and √73. Find the length of the hypotenuse.
A 40607 lb force is applied to a surface that measures 79 in long and 8 in wide. Determine the pressure exerted on the surface by the force in both psi and Pa. 1 Pa = 1.45×10-4 psi.
A 77 kg rock with a volume of 4 L is completely submerged in water. The density of water is 1 kg/L. What volume of water is displaced by the rock?
Suppose that a weight on a spring has an initial position of s(0)=-5 inches and a period of P=2 seconds. Find a function s(t)=acos(2πFt) that models the displacement of the weight.
An ac generator with E = Emsin(?dt), is connected to a capacitor with capacitance C. When the current is a maximum, what is the emf (E) of the generator?
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