The temperature of air is 30°C, and the substance cools from 100°C to 70°C in 15 minutes. Find t when the temperature will be 40°C.

Q: When finding the forces of an object on an inclined plane, which of these vectors is separated into…

A: when ever an object is placed n the inclined surface it usually starts to slide downward.The rate at…

Q: An automobile on a highway enters a curve of radius Randbanking angle 8, as shown in Fig. P1.12. The…

A:

Q: By using the kinetic energy formulas from the first semester and using electric field knowledge…

A: A moving charge carries kinetic energy in an electric field. And that kinetic energy be defined as,

Q: A 4-lb body moves in a straight line on horizontal plane whose coefficient of friction is 1/4. The…

A: Acceleration:dvdt = advdsdsdt = a(dsdt = v)dvdsv = a This equation can be used to find acceleration…

Q: 1. Copy and complete the following sentences: a The slope of a distance- time graph represents b.…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall,…

A: This problem can be solved using equations of motion formulae given details :t1 = 0.326 st2 = 0.407…

Q: The moon orbits the earth once every 2.4 x 10° sec at a distance of 3.8 x 10% m. Assuming uniform…

A:

Q: An aluminum pie pan is connected by a wire to a metal plate, called plate 1, as shown below. Sitting…

A: According to the given data

Q: Assuming that all the numbers given are exact, what is John's position at a time of 4.41 s? Enter…

A:

Q: Part I. Determine the following quantities. a. Total resistance (R7) b. Total Current (I7) c.…

A: Answers

Q: Consider a system of two masses and a pulley as shown in Fig. P1.10. Let m, = 12 kg, m2 the mass of…

A: Given m1=12 Kgm2=8 Kgmass of the pulley, m=10 Kgradius of the pulley, r=10 cm=10×10-2cm=0.1 mThe…

Q: )Problem 2: A 32 kg block is pulled along the ground for a distance of 5.2 m by a 63 N force at an…

A: "As per the guidelines i solved the first three subpart". Part (a): Find the work done by the normal…

Q: Q10: Drag sled weighs = 50 lbs; Pull force = 22 N; %3D Coefficient of friction = %3D

A: 10)Sled weigh = 50 lbs = 502.205 kg = 22.67 kg pull force (F) = 22 N

Q: A cubic meter (m) of air weighs about 1.25 kg. A decent size classroom has a volume of roughly 800…

A:

Q: Now in velocity selector region, determine the magnitude and the directions of magnetic, electric…

A:

Q: This answer is incorrect. Can I get a correct answer please?

A: Here velocity u= 189 ft/sit makes angle 34o with horizontalTime taken to hit the point above h…

Q: When no friction acts on an incline of angle 0, the net force along the incline is equal to ? mgcose…

A:

Q: 2GM What is the escape velocity from the surface of Rhea if its mass is 2.3 x 1021 kg and its radius…

A:

Q: A discus thrower accelerates a disc with mass of 2 kg from rest wit four full turns (revolutions)…

A: We have givenMass of disc (m)=2 kg Four turn of revolution (θ)=4×2π=8π  radInitila velocity u=0…

Q: What should be the power of the voltage supply that we will use in velocity selector region?

A: The velocity selector region is a region, in which there is a uniform electric field and a uniform…

Q: An object moving in a circular trajectory experiences both centripetal and tangential accelerations.…

A: We are allowed to give the explanation of first question only which is given below.  Please repost…

Q: The speed of the solar wind is approximately 400 km/s. How many days does the solar wind take to…

A: Given: Speed of solar wind, v=400 km/s To find: Days taken by solar wind to reach from Sun to Mars

Q: 1. A particle with a charge of -1.24 x 10* C is moving with instantaneous velocity v = (1.49 x 104)…

A: Given data: A charge on moving particle is, q=-1.24×10-8 C The instantaneous velocity of the…

Q: uhh it says the correct answer should be 2.9 m... how would I go about getting to that answer?

A: Here we use conservation of energy to solve the problem initially when we compressed the spring…

Q: Can someone please explain the answers again. And have them answered in kg m/s ??

A: Mass of the squash ball, M = 25 g = 0.025 kg Initial velocity up toward the wall at a 40° angle is u…

Q: Questions: 1. Describe the graph of displacement versus time created on the preceding page: 2. Write…

A:

Q: Two particles of masses m, and m, at a distance R from each other are under the influence of an at-…

A: When a body is undergoing circular motion the force responsible for keeping the object in the curve…

Q: Again, in order to produce the magnetic field in velocity selector region, determine the current and…

A:

Q: Consider a cone with an apex half-angle 6, as shown in Fig. P1.16. A particle of mass m slides with-…

A:

Q: You attach a meter stick to an oak tree, such that the top of the meter stick is 2.87 meters above…

A: Meter stick is at a height hm = 2.87 m above the ground time taken by the acorn to pass the length…

Q: I need help on question #1... I dont understand and the solution in the textbook that's already…

A: Given data:Mass of the steel piece, M = 2.50 lbSpecific heat of the steel, Cs = 0.115 Btu / lb°FLet…

Q: 3) Calculating Percent Recovery Examples: a) Unknown A or C: Toploading Balance Mass of recovered…

A: Concept: Here in This Question, we are given the Mass of the recovered solid and the Mass of the…

Q: The graph below represents the position as a function of time of a rocket traveling in a straight…

A: (a) Average velocity between 0 and 4 seconds vavg=x→f-x→iΔt=(40i^)-(-10i^)4=12.5i^

Q: back and forth along a road, following the position versus time graph over the time period shown in…

A: Here Graph between position and time is shown in the figure. We have to calculate the average speed…

Q: Part A Proton-beam therapy can be preferable to X rays for cancer treatment (although much more…

A:

Q: A cyclist, starting from rest, travels in a straight line for 10 minutes. 1. During the first 2.0…

A: This problem can be solved using kinematic equations of motion

Q: When an object is sitting on a sloped surface that is tilted up at an angle of 30° from the…

A: When an object of mass m is sitting on a sloped surface that is tilted up at an angle of 30° from…