A person pushes on a stationary 125 N box with 75 N at 30° below the horizontal. The coefficient of static friction between the box and the horizontal floor is 0.80. (a) Make a free-body diagram of the box. (b) What is the normal force on the box? (c) What is the friction force on the box? (d) What is the largest the friction force could be? (e) The person now replaces his push with a 75 N pull at 30° above the horizontal. Find the normal force on the box in this case.

Q: 91 92 Two charges 9₁ and 92 of opposite signs lie on the x-axis as shown in the figure. Let the…

A: q1 = 3x10-7 Cq2 = -4.5q1 = -4.5x3x10-7 = -13.5x10-7 Cr = 22.30 cm

Q: An electron is traveling at 5×105 m/s when it is 3 nm away from a proton. What is the speed of the…

A: Speed of electron=5x105 m/sDistance between electron and proton=3 nm

Q: In the figure a "semi-infinite" nonconducting rod (that is, infinite in one direction only) has…

A:

Q: Suppose the position vector for a particle is given as a function of time by r(t) = x(t)i + y(t)ĵ,…

A:

Q: At the equator, the earth’s field is essentially horizontal; near the north pole, it is nearly…

A:

Q: Vectors A and B are in the xy plane. Vector A has a magnitude of 8 units and an angle of 130…

A:

Q: Consider scattering with electrons of 50 eV on a crystal with planes separated by .3 nm. How many…

A: Bragg's Law is a fundamental equation in the field of X-ray crystallography and electron…

Q: A rock was thrown horizontally from a 100.0 m high cliff. It strikes the ground 90.0 m from the base…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: 1. A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the…

A:

Q: What is the magnitude of the electric field at the point (2.90 i- 7.20 j+5.50 k) m if the electric…

A:

Q: An object has a density of 4.4 g/cm3. If the object has a mass of 11.4 g and is placed in a…

A:

Q: 2. How much work is required by the electric field force to separate two charges (each -1.5 µC)…

A: Charge(q)=-1.5 uCSeparation (r)=7.6 mm

Q: A wheel, starting from rest, has a constant angular acceleration of 0.5 rad/s2. In a 2.9-s interval,…

A: Angular acceleration is Angular displacement is Time is Initial angular velocity is Find:Time for…

Q: At particular frequency,the velocity of the cap in m/s is given by the expression V=0.5mcos(625t).

A: Velocity of oscillation v = 0.5 Cos(625t)

Q: What is the direction of the electric field inside a positively charged solid conductor that is in…

A: In a positively charged solid conductor that is in static equilibrium, the electric field inside the…

Q: 123. Two identical small conductive spheres of charges q₁-12 nC and q₂--18 nC are placed with their…

A:

Q: |Problem 24: An athlete crosses a 27 m wide river by swimming perpendicular to the water current at…

A: Width of the river is Distance covered downstream is Speed of the person with respect to water is…

Q: A 5.19 kg ball is attached to the top of a vertical pole with a 2.41 m length of massless string.…

A: Draw the free-body diagram of the ball.

Q: Suppose you first walk A=35 m in a direction of 20 degrees west of north and then B=58 m in a…

A:

Q: Question 7 Two batteries (of the same voltage) connected in parallel with the negative terminal of…

A:

Q: While driving down a straight road at 70.5 km/h, you pass your physics professor who happens to be…

A:

Q: The density of gold is 19.3 g/mL. Emilio knows he must also measure the mass of each nugget to…

A: Question(10):A set of data containing mass of nugget measured in units of .Note:Find:Convert each…

Q: Figure 8₁ 9.0 V R₁-22 52 ww R₂ = 1892 ww 83-6.0 V 1 of 1 > ▼ Part A Determine the magnitudes of the…

A:

Q: A boat is traveling where there is a current of 0.20 m/sm/s east. To avoid some offshore rocks, the…

A:

Q: A charge of 2.50 C passes through a pocket calculator's solar cells in 7.50 h. What is the power…

A: ,,

Q: 15. The tension in a 3.0-m string is 75 N and its mass is 0.090 kg. What is the speed (in m/s) of…

A: Given Data:The length of the string is The tension in the string is The mass of the string is The…

Q: A 1400 kg car is driving down the road. The car's engine is moving it with a force of 3000 N.…

A: GIven the mass of the car is The car engine moving with a force of F=3000NThe friction slowing the…

Q: Problem 1: Consider a parallel-plate capacitor made up of two conducting plates with dimensions 39…

A:

Q: The ammonia moleculeNH3​has a permanent electric dipole moment equal to1.41D, where1D=1debye…

A: Permanent electric dipole moment P=1.41 D1 Debye unit=3.34*10-30 C.mDistance d=60.0 m along axis of…

Q: winter hikers dog generates heat at a rate up to a maximum value of 120 W. She is hiking on a brisk…

A:

Q: Two ships A and B are moving with constant speeds VA = 20 m/s and VB = 17 m/s, respectively, along…

A:

Q: Two batteries connected in series with the negative terminal of one conn Difference of the two…

A: Given that two batteries connected in series with the negative terminal of one connected to the…

Q: The wavefunction for the motion of a particle on a ring is of the form ψ=NeimΦ . Evaluate the…

A:

Q: A pumpkin drops from a height of 32m above the ground. What is the speed when it hits the ground?

A: Height = 32 mFind the speed ?

Q: Four charges of equa magnitude q = 2.06 microcoulombs are situated as shown in the diagram below. If…

A:

Q: Suppose a soccer player kicks the ball from a distance 28.3 m toward the goal. Find the initial…

A:

Q: I drew eqipotential lines that are perpendicular to the elctric filed lines in the paralell plates…

A: When drawing equal potential lines in a parallel plate capacitor, it's important to consider their…

Q: Chase and Kadri consider the following values, which are part of a set of experimental data for a…

A:

Q: Capacitors are connected in parallel

A: When two capacitors are connected in parallel, the voltage across each capacitor is the same. The…

Q: Incoming ray II. Solve the problems! (Prepare the solutions on separate sheets, then fold them into…

A: Sin =

Q: the propeller thrust T which must be developed by the tug to maintain a fixed position while…

A:

Q: 1) A screen that is 1.0m wide is 2.0m away from a pair of slits illuminated by 633-nm light, with…

A:

Q: Two masses m₁ and m₂ are attached to a rod of negligible mass that is capable of rotating about an…

A:

Q: ball is released at a height of h=2.70 m on a frictionless 30.0o slope. At the bottom, it turns…

A:

Q: What is the difference between saying that no forces act on a body and saying that the net force…

A: (1) We find out difference between no forces act on a body and net force acting on the body is zero…

Q: Question: A) A car is driving too fast on a flat non-banked curve. The car cannot stay on the road.…

A:

Q: wall clock has a second hand 22.0 cm long. What is the radial acceleration of the tip of this hand?…

A:

Q: A self driving car is moving forward at a constant velocity. Based on what you know about…

A:

Q: Find the current through a person and identify the likely effect on her if she touches a 120 V AC…

A: Ohm's law states that the current (I) through a conductor between two points is directly…

Q: K Q (a) 40° (full angle) 0 lei In Fig. 24-28a, what is the potential at point P due to charge at…

A: The formula for electric potential isπV=​​14πϵ0⋅qrWhere:V is the electric potential at point P.ϵ0​…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: