A surveyor measures the distance across a straight river by the following methods: Starting directly across from a tree on the opposite bank, she walks 100 m along the river bank to establish a baseline. Then she sights across to the tree. The angle from her baseline to the tree is 35 degrees. How wide is the river?

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

What is a costume plot? why is it important to a film or theater production?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?