A long, straight wire lies along the x-axis and carries current I=55.0 A in the +x-direction. A small particle with mass 4.00 x 10-6 kg and charge 8.00 x 10-3 C is traveling in the vicinity of the wire. At an instant when the particle is on the y-axis at y = 9.00 cm, its acceleration has components a = -5.00 x 103 m/s² and ay = +9.00 x 103 m/s² Part A ۵ At that instant what are the x- and y-components of the velocity of the particle? Express your answer in kilometers per second. Enter your answers numerically separated by a comma. ΜΕ ΑΣΦ Uz. Vy= - 23.6, 41.7 - Submit Previous Answers Request Answer ? km/s

In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.19 × 105 m/s. (a) Find the force acting on the electron as it revolves in a circular orbit of radius 0.526 x 10-10 m. magnitude direction ---Select--- N (b) Find the centripetal acceleration of the electron. magnitude direction m/s² ---Select--- ✓

Cross-section of a beam 3) The rectangular tube cross-section of a beam, shown in the figure aside, is bent about a horizontal axis due to the bending moment of 899.5 Nm. Calculate the total force that is acting on the shaded portion of the cross-section of the beam. (Suggested time for solution is 25 minutes) 0.8cm C 4.6cm 0.8cm 3cm 0.8cm 0.8cm

L +6.30 nC of charge is uniformly distributed along the left half of a thin rod of total length L = 6.00 m, while -6.30 nC of charge is uniformly distributed along the right half of the rod, as shown in the figure. What is the magnitude of the electric field E at the dot, a distance r= 1.80 m from the centre of the rod? Magnitude: Question 2 Two thin rods of length 41.9 cm are placed side-by-side as shown below, separated by a distance x = 1.90 cm. The positive rod has total charge 8.80 nC. The electric field a distance d= 24.2 cm away from the positive rod is zero. What is the magnitude of the charge on the negative rod? Magnitude of charge (input a positive answer):

(2) At the moment shown, a particle of mass 1kg is traveling along the curved path. The radius of curvature of the path at the position of the particle is 300 m, and the particle is accelerating at a rate of 9 m/s². If the velocity of the particle at this position is 60 m/s, the resultant of the forces acting on the particle is: (a) 9 N (b) 12 N (c)) 15 N (d) 21 N

A 3-meter steel bar has a mass of 30 kg rests on two inclined planes as shown in the figure. The mass center is 1.2 meter from one end as shown. Both ends are provided with frictionless rollers. 1.8 m. 1.2 m 30 kg 40 deg 25 deg (a) Calculate the angle "x" which the bar makes with the horizontal to be in equilibrium. (b) Calculate the reaction at point A. (c) Calculate the reaction at point B.

B. What is the mass M that must be suspended at the left to hold the system in equilibrium in the position shown?

b) A uniform rod is in equilibrium under the action of weights as shown in Figure 1. Calculate the value of W and the reaction at the fulcrum, ignoring the weight of the rod. 20m 50mm 100mm 250mm 250mm W 25N 10N 40N 40N Figure 1 (8 marks)

Please answer this is statics of rigid bodies.

A prismatic bar is fastened between two rigid walls A and Band subjected to loads as shown in figure. What will be the ratio of magnitude of reaction at A and B respectively? +13.6 kN Þ27.2 kN A C D В 100 mm 200 mm 300 mm