Arêtes, horns, and U-shaped valleys are _______________ features of ________________ glaciers.  

Water is moving with a speed of 6.4 m/s through a pipe with a cross-sectional area of 4.4 cm2. The water gradually descends 9.2 m as the pipe increases to 7.6 cm2. (a) What is the speed at the lower level? (b) If the pressure at the upper level is 1.5 × 105 Pa, what is the pressure at the lower level?

A block of wood floats in fresh water with 0.844 of its volume V submerged and in oil with 0.866 V submerged. Find the density of (a) the wood and (b) the oil.

A 4 kg cart is moving to the right at 8 m/s and collides with a 2 kg cart moving to the left at 5 m/s. After the collision, the two carts stick together. a) What is the velocity of the combined carts after the collision?b) What is the direction of motion after the collision?c) Is the collision elastic or inelastic?

A person standing on a rotating platform holds two weights, one in each hand. The person and platform initially rotate at 1.8 rad/s with their arms extended. The total moment of inertia of the system is 6.0 kg·m². The person then pulls the weights closer to their body, reducing the total moment of inertia to 2.5 kg·m². a) What is the new angular velocity of the system?b) If the person then extends their arms again and the moment of inertia increases to 5.0 kg·m², what is the new angular velocity?c) Explain why the angular velocity changes even though no external torque acts on the system.

A soccer player kicks a ball with an initial velocity of 25 m/s at an angle of 40° above the horizontal. The ball leaves the ground and lands at the same height. Ignore air resistance. a) How long is the ball in the air?b) How far horizontally does the ball travel?c) What is the maximum height reached by the ball?   (Type detailed steps)

A 10 kg box is pushed across a horizontal floor with a force of 50 N. The coefficient of kinetic friction between the box and the floor is 0.25. a) What is the frictional force acting on the box?b) What is the net force on the box?c) What is the acceleration of the box? show clear steps (type).

The viscosities (thickness) of magmas _____________ with increasing percentages of silica.  

Many research studies have connected volcanic activity to climate patterns on Earth. The two are indeed related. While humans are likely to have a far greater effect on the climate than volcanoes, volcanoes do impact the climate. Which of the following best describe how volcanoes effect the climate?

Which type of volcano usually has the least explosive eruptions?