Which of the following lenses has at least one plane surface?

a. double-convex lens

b. converging concavo-convex lens

c. double-concave lens

d. plano-convex lens

Baptiste the boatman with mass m1=86.7 kg is standing at the back of his boat. The boat has a total mass m2=111.8 kg which is uniformly distributed along its length L=2.9 m. The boat is initially touching the dock.

Three cannons are located at the top of a cliff above a level plain. Cannon A is aimed at an angle of 25° above the horizontal and shoots cannonballs with a speed of 85 m/s. Cannon B is aimed directly horizontally and shoots with a speed of 100 m/s.

A ball that occupies 20cm^3 of space is half submerged, very gently, in a full glass of water. How much volume of water spills out?

Which is larger than a single atom? a. magnetic domain b. electron c. neutron cloud d. proton

Can a Fidget Spinner spin under water?

You create a transformer by wrapping wire around an iron nail. The number of turns are: Primary (500); Secondary (2500). The Primary voltage is 3.00 V. The Secondary current is 200 mA.

A 90kg cannon fires 100kg shell with muzzle velocity of 75m/s. Calculate the recoil velocity of the cannon relative to the ground

The planet XYZ traveling about the star ABC in a circular orbit takes 24 hours to make an orbit. Assume that the orbit is a circle with radius 89 comma 000 comma 00089,000,000 mi. Find the linear speed of XYZ in miles per hour.

Your heart pumps 80 g of blood with each beat. The blood starts from rest and reaches a speed of 0.60 m/s in the aorta. If each beat takes 0.16 s, the average force exerted on the blood is a. 3.0" 102 N b. 0.22 N c. 0.16 N d. 0.30 N e. 0.98 N

What is the formula for calculating the mass when i have the number of volume and density