stationary 500 g rifle aimed at a target

A ball of mass 5 kg is attached to a string of length 10 cm, forming a pendulum. If the string is raised horizontally as shown and released from point A, then what is the v

A small car is sent through a loop- the loop if initial velocity is17.7 find r

Trinity and Kayden are running in gym class. Trinity runs a mile in 7.3 minutes, and Kayden runs a mile in 450 seconds. Who ran the mile faster?

Solar cells are given antireflection coatings to maximize their efficiency. Consider a silicon solar cell (n=3.50$n=3.50$) coated with a layer of silicon dioxide (n=1.45$n=1.45$).

What is the minimum coating thickness (but not zero) that will minimize the reflection at the wavelength of 704 nm$\mathrm{n}\mathrm{m}$ where solar cells are most efficient?

Trinity and kayden are running in gym class trinity’s runs a mile in 7.3 minutes and kayden runs a mile in 450 seconds who ran the faster mile

Solve for D: 

A = B + CD 

An ice-cube tray of negligible mass contains 2.5 kg of water at 25°C. How much heat must be removed to cool the water to 0°C and freeze it?

A nozzle with a radius of 0.250 cm is attached to a garden hose with a radius of 0.900 cm. The flow rate through hose and nozzle is 0.500 L/s. Calculate the speed of the water (a) in the hose and 2 marks (b) in the nozzle.

TWO SMALL SPHERES SPACED 20.0CM APART HAVE EQUAL CHARGE. HOW MANY EXCESS ELECTRONS MUST REPRESENT ON EACH SPHERE IF THE MAGNITUDE OF THE FORCE OF REPULSION BETWEEN THEM IS 3.33X10^-21N?

What is the electrical potential 15.0 cm from a 4.0

a very long, straight wire has charge per unit length 1.50 x 10 10 c/m. at what distance from the wire is the electric field magnitude equal to 2.50 n/c?

A copper transmission cable 100 km long and 10.0 cm in diameter caries  a current of 125 A. What is the potential drop across the cable?