7.) Estimate the work you do to mow a lawn 10 m by 20 m with a 50-cm-wide mower. Assume you push with a force of about 20 N . Express your answer to two significant figures and include the appropriate units. W=__________ _____________

Q: Which of the following statements are true? Choose all that are. a. A photon has kinetic energy.…

A: A photon is an elementary (non-divisible) and fundamental particle of the fundamental force known as…

Q: A 1300 kg car moving at 6.3 m/s is initially traveling north in the positive y direction. After…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: Why do woolen blankets keep us warm better than cotton sheets?

A: In the woolen blanket, there are more gaps. So, more air are confined within woolen blanket. Air is…

Q: A 50 cm wire experiences a magnetic force of 2.40 N. (a) What is the angle between the current and…

A: Given data:  A current carrying wire in magnetic field  Length (L) = 50 cm = 0.50 m Magnetic force…

Q: A crate of mass 75 kg is pushed along a floor with a force of 30 N for a distance of 7 m. Calculate…

A: Given data :     Force   =   F    Distance   =   d          To find :            Work done

Q: A hollow cylinder, of inner radius 0.28m and outer radius 0.41m, is rotating around an axis through…

A:

Q: 12.) A child sitting 1.80 mm from the center of a merry-go-round moves with a speed of 1.15 m/s.…

A: given data

Q: A research Van de Graaff generator has a 2.00-m- diameter metal sphere with a charge of 10.00 mC on…

A: Given: The diameter of the sphere is 2 m. The charge on the sphere is 10 mC.

Q: 11-4.22. The coefficient of friction between the road and the tires the car shown in Fig. P-11-4.22…

A: Given, Co-effiecient of friction between road and tire, μ = 0.60  Weight of the car, W= 4000lb…

Q: Imagine yourself holding a bowling ball and a ping pong ball. If you drop these balls in a vacuum…

A:

Q: At 20 °C, the surface tension of water is 0.073 N/m. A soap film is holding up the entire weight of…

A: Wire length = 2.2 cm = 0.022 m Wire Diameter = 0.1 cm = 0.001 m Wire radius = 0.001 / 2 Surface…

Q: Problem Set A 0.30 – kg object is being whirled vertically using a 1.0 -m rope. Illustration a) What…

A:

Q: 3. Two equal charges are interacting in a vacuum. What is the charge of either particle when they…

A: Electrostatic force between to charges is given by:- F= (kQ1Q2)/R2 Where, k= coulomb constant = 8.98…

Q: lyze and solve the following problems carefully. Show complete solutions and box the final answer.…

A:

Q: R4 70 0 QUESTION #6 Determine the equivalent resistance. Express R1 10 0 R3 50 2 R5 90 2 your answer…

A: The equivalent resistance of the circuitis 800/41 ohm.

Q: Measured values are usually presented as mean plus or minus uncertainty. If two experimental values…

A: Given Two experimental valuesare (8.1 ± 0.5) and (7.9 ± 0.4) To find out The uncertainty of their…

Q: Suppose a certain person's visual acuity is such that he or she can see objects clearly that form an…

A: The maximum distance is 296.25km.

Q: 2人 3A 60 マM 4の H.W find the current at 4ohm by superposition theorem

A:

Q: 4. If 10 C of charge passes a given point in a conductor every 2 seconds, how much current passes…

A: Since you have asked multiple question, as per our guidelines we will solve the first question for…

Q: In an absorption line spectrum, what do the spectral widths of the lines tell us?

A: In an absorption spectrum, the spectral widths not only determines the element but also different…

Q: Find the fundamental frequency and the frequency of the first three overtones of a pipe 45.0 cm…

A:

Q: rocket is fired from the ground at some angle and travels in a straight path. When the rocket has…

A: rocket is fired from the ground at some angle and travels in a straight path. When the rocket has…

Q: A Christmas light hangs on a series of strings as shown in the figure. The tension on string a, Ta,…

A:

Q: Using a 1-mF capacitor, a 2-mF capacitor, and a 3-mF capacitor, which of the following capacitances…

A: Using a 1-mF capacitor, a 2-mF capacitor, and a 3-mF capacitor, which of the following capacitances…

Q: 5. If q1 and q2 are of opposite charges, what would be the value of the electrostatic force if the…

A: Answer:-  We know that  The electrostatic force between q1 and q2 is directly proportional to the…

Q: Kyle, a 90.0 kg football player, leaps straight up into the air (with no horizontal velocity) to…

A:

Q: A rubber ducky is traveling around a drain pipe, slowly being pulled into the center of the circular…

A: Initial angular momentum = mv1r1 Final angular momentum = mv2r2

Q: Suppose you have a closed rigid container of air at 20 Celsius on the surface of the Earth. We…

A: Given that               The initial temperature of the rigid container is (T1) = 20°C = 20+273 =…

Q: A barrel contains a 0.150 m layer of oil of density 640 kg/m* floating on water that is 0.220 m deep…

A: Density of oil = 640kg/m3 Layer of oil height =0.15m Height of water =0.22m Density of water…

Q: A curve on a toy race car track is banked at 26.26° and has a radius of 0.20m. With what maximum…

A:

Q: 3. Two equal charges are interacting in a vacuum. What is the charge of either particle when they…

A: Given data:- Electrostatic force between the charged particle = 2 N Distance between the charged…

Q: Reflection by thin layers. In the figure, light is incident perpendicularly on a thin layer of…

A:

Q: 5

A:

Q: PROBLEM NO. 5 From point A, a projectile is launched with initial velocity v, at an angle 0.…

A:

Q: 1) Set your top (incident) medium as glass. Set your bottom (refracted) medium as air. Using the…

A: Since you have posted a question with multiple sub-parts, as per our guidelines we will solve first…

Q: A plane headed due south is traveling with an airspeed of 180 miles per hour. The wind currents are…

A:

Q: 2. How far should you separate two particles which have 5 nC and 16 nC in order to have a force of…

A: Solution:- 1) The electrostatic force acting between two charged particles separated by a distance r…

Q: White light passes through a 15.0-cm-thick, silicate flint, glass slab with opposite, smooth,…

A:

Q: A 65.0 kg skier with an initial speed of 11.0 m/s coasts up a 2.50 m high rise as shown in Figure…

A:

Q: Problem 3: A simple pendulum is made with a mass of 500 g and a massless string of length 50 cm. A…

A:

Q: The mass of a particular eagle is twice that of a hunted pigeon. Suppose the pigeon is flying north…

A:

Q: Physics Question

A: Given data :    Velocity   =   V     Mass   =   m        To find :          Momentum

Q: A pickup truck has a mass of 874.05kg. It travels with a velocity of 21.361m/s before it hits a…

A:

Q: A lightening strike 2 km away creates a sound of thunder by making a shock wave in air from the…

A: Light travels faster than sound, so we see the flash before we hear the sound. Hence last two…

Q: A motor boat moves at a steady speed of 7 m/s. Water - resistance acting on it is 5000 N. Calculate…

A: Given data :       Speed of the boat   =   V          Force   =   F        To find :…

Q: A ray of light is refracted when passing from glass (material 1) into air (material 2, N2=1). The…

A: Given data:  Index of refraction of air (n2) = 1 Angle of incidence (θ1) = 35° Angle of refraction…

Q: Make a ray diagram illustration of a concave mirror with object distance of 2 m and image distance…

A:

Q: 2. Two 4 uC point charges blocks are 1-m apart at coordinate (x, y) = (0m,0m) and (1 m, 0 m)…

A:

Q: A projectile is fired with initial velocity of 350 m/sec., and with an angle of 50 degree with…

A:

Q: You have a spring about which you know little, but with experimenting you discover that it extends 1…

A: