A0.40-kg mass attached to the end of a string swings in a vertical circle having a radius of 1.8 m. at an instant when the string makes an angle of 40 degrees below the horizontal, the speed of the mass is 5.0 m/s. what is the magnitude of the tension in the string at this instant?
a. 9.5 n
b. 3.0 n
c. 8.1 n
d. 5.6 n
e. 4.7 n

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false