A proton moves through a region of space where there is a magnetic field B⃗ =(0.50i+0.40j)T and an electric field E⃗ =(2.8i−4.0j)×103V/m. At a given instant, the proton’s velocity is v⃗ =(6.1i+2.8j−4.8k)×103m/s.

Estimate what Earth’s rotational acceleration would be in rad/s2 if the length of a day increased from 24 h to 48 h during the next 100 years.

What is the average kinetic energy of a particle of air at standard conditions?

A bicyclist rides 1.53 km due east, while the resistive force from the air has a magnitude of 8.77 N and points due west. The rider then turns around and rides 1.53 km due west, back to her starting point. The resistive force from the

An apparatus similar to the one used in the electric field mapping lab is used to find the electric field between two parallel conducting plates. The electric potential difference between the plates is 57.7 0.2 V and the distance spearating the plates is 8.3 0.1

Two 2.0-cm-diameter-disks spaced 1.5 mm apart form a parallel-plate capacitor. The electric field between the disks is 5.0×10 5 V/m .

The displacement of a simple harmonic wave as a function of position x and time t is given by

A 7.5 kg block slides down a 26 degree incline with u= 0.19. What is its acceleration?

A 2.60-kg block is attached to a horizontal spring that has a spring constant of 190. N/m. At the instant when the displacement of the spring from its unstrained length is -0.115 m, what is the acceleration a of the object? In your answer, be

Two waves with the same angular frequency, wave number, and amplitude ω, k, A, respectively, but differ in a phase Ф, are to be superposed (added). By using trigonometric identities, and doing some algebra, provide the total amplitude as a function of Ф