To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest. The belt is a 200-turn coil. When the patient inhales, the area encircled by the coil increases by \( 45.0 \mathrm{~cm}^{2} \). The magnitude of the Earth's magnetic field is \( 50.0 \mu \mathrm{~T} \) and makes an angle of \( 28.0^{\circ} \) with the plane of the coil. Assuming a patient takes 1.89 s to inhale, find the average induced emf in the coil during this time interval. 21.02

Cognome, classe, data Quesito 1A Un sistema è composto da due sfere a contatto su un piano orizzontale. Sfera 1: sfera omogenea di raggio 2 cm e massa 3 kg . Sfera 2: sfera omogenea di raggio 4 cm e massa 6 kg . Calcolare le coordinate del centro di massa.

ON 1: KINEMATICS A ship that can cruise at \( 48 \mathrm{~km} / \mathrm{h} \) in still waters sets course due south-west. It is driven off course by a current flowing West \( 26^{\circ} \) North at a velocity of \( 8 \mathrm{~km} / \mathrm{h} \). Calculate the following: \( 1.1 .1 \quad \) The resultant velocity in magnitude and direction \( 1.2 \quad \) The distance the ship will cruise in 5 hours

The brightness of a light bulb changes inversely with resistance and directly with voltage. What is the new resistance if a 60 -watt, 120 -volt bulb is used in place of a 100 -watt, 120 -volt bulb with 144 ohms?

A child pulls a wagon with a force of 16 pounds. The handle of the wagon makes an angle of \( 60^{\circ} \) with the ground. Express the force vector \( F \) in terms of \( i \) and \( j \). \( F=(\square) i+(\square j \) (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

52. A certain planet has a mass of \( 3.3 \times 10^{23} \mathrm{~kg} \) and a adjus of \( 2.6 \times 10^{6} \mathrm{~m} \). What is the acceleration due to gravity on the surface of this planet? a. \( 0.54 \mathrm{~m} / \mathrm{s}^{2} \) b. \( 3.3 \mathrm{~m} / \mathrm{s}^{2} \) c. \( 4.0 \mathrm{~m} / \mathrm{s}^{2} \) d. \( 9.8 \mathrm{~m} / \mathrm{s}^{2} \)