Two forces are applied to a wheel with a radius of 1 m. The 50 N force is perpendicular to the wheel and paints up. The 20 N force is perpendicular to the wheel and points down. What is the torque on the wheel? A: 30 N m
B: 70 N m
C: -30 N m
D: -70 N m

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?

Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?

Debris produced by mining is called