Blog

What blood vessel type is involved in the direct exchange of materials between blood and tissues?

Systolic pressure is your blood pressure at its highest and when the heart contracts.

The left ventricle is more muscular than the right ventricle because:

Assuming the +x-axis is horizontal to the right for the vectors in the figure below, find the vector product  F   → X   A   → Capture1(1).PNG

A block of wood is pulled by a horizontal string across a rough surface at a constant velocity with a force of 6 N. The coefficient of kinetic friction between the surfaces is 0.6. The force of friction is

The blocks shown in the figures have equal masses and are made of the same material. The velocity is the same in each figure. The total frictional force exerted by the surface on the blocks is Friction1.PNG 

A 0.50-kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m). When the string is horizontal, the speed of the mass is 9.20 m/s. What is the magnitude of the force of the string on the mass at this position?

 A force of F = 90 N is exerted on mass m1as shown. Both m1 and m2 accelerate to the right at 3 m/s2 along the frictionless surface. The force F makes an angle of 30 degrees to the horizontal. If m2 = 10 kg, and m1 = 2.7 kg calculate the normal force.Screen Shot 2020-11-08 at 7.17.19 PM.png 

A disk of radius 0.05 m and moment of inertia 0.2 kg · m2. If the two forces with force showed in the figure are exserted on the disk, the resulting angular acceleration of the disk is 20 rad/s2. Determine the magnitude of the force . Capture.PNG  

Which of the following types of needles is frequently used in ophthalmologic procedures?