Question 3. Sir Lancelot, who weighs 800 N, is assaulting a castle by climbing a uniform ladder that is 5.0 m long and weighs 180 N. THe bottom of the ladder rests on a ledge an dleans across the moat in equilibrium against a frictionless, vertical castle wall. The ladder makes an angle of 53.1° with the horizontal. Lancelot pauses one-third of the way up the ladder. (a) Find the normal and frictional forces on the base of the ladder. (b) Find the minimum coefficient of static friction needed to prevent slipping at the base. (c) Find the magnitude and direction of the contact force on the base of the ladder (i.e. Normal force plus frictional foce).

Q: 16. Express 5690000000 in scientific notation 17. How many significant digits does 705.001 have? 18.…

A: Scientific notation : A.B × 10C  where A , B & C are digits

Q: - ヘ How?

A: Theory :

Q: 2. The density of cars (in cars per mile) down a 20 mile stretch of the Pennsylvania Turnpike is…

A: Given density of cars (in miles)  And length L=20miles Let's take a small element of length dx at…

Q: What are the application of physics in medicine? Kindly expound your answer

A:

Q: Round off each of the measurements to two significant figures. Express your answers using…

A: A)Measurement = 1.194 Kg  = 1.2 kg ( two significant figures)B)Measurement = 32.1246 L  = 32 L ( two…

Q: Starting from an airport, an airplane flies 190 miles north and then 210 miles east. How far, in…

A: Given data:  A airplane flies 190 miles , towards North Then 210 miles, towards East Required: The…

Q: A microwave oven has a power requirement of 1,251 W. A frozen dinner requires 6.8 min to heat on…

A: (a) Energy used in kWh

Q: You are making soup that requires 4 lbs. 7 oz. of mirepoix. The ratio for mirepoix is 2 parts onion,…

A: 16 oz make a pound. Using this, first, evaluate the total given mass (M) in pounds as follows:   M=4…

Q: a certain field has a length of 516 ft. how long is the field in meters? answer only

A: Length, L = 516 ftWe have to convert length (in ft) to length (in m).

Q: covers an area of 5.01

A: 1 m = 100 cm

Q: Mass (m): Mechanical Energy (ME) = 1,000,000 J PE = 998,791 J h: v = 1.5 m/s KE: v: 55m v = 31.28…

A: At stage 1: PE = 998791 KE = Total mechanical energy - PE  KE = 1209 J KE = 12mv2 = 1209 m=1074.67…

Q: How much does it cost to operate a dryer for 66 minutes if its power consumption is 2,702 W. The EUC…

A: The energy in kWh is given as E=P×Time(hour)

Q: The electrical force between two charges is 89.4 N. One charge is 4.1 x 10^-4 C. This charge is…

A:

Q: 30. The volume of Earth is on the order of 1021 m3. (a) What is this in cubic kilometers (km3)? (b)…

A: The given volume of the Earth is

Q: o, what formula do you apply to get 16 m ? I was using the…

A: for  t = 4 sec initial velocity of car = V0 = 0 m/s acceleration = a = 4 m/s2 final velocity of car…

Q: A microwave oven has a power requirement of 1,263 W. A frozen dinner requires 5.8 min to heat on…

A: Given data:Power requirement of microwave oven, P = 1263 W = 1.263 kWTime, t = 5.8 min = 5.8 / 60 =…

Q: The electrical force between two charges is 14.1 N. One charge is 8.6 x 10^-4 C. This charge is…

A: The electrical force between two charges is 14.1 N. One charge is 8.6 x 10^-4 C. This charge is…

Q: How did it become 21.3 + (1.88)m?

A: Here we have to add all x-component and all y-component terms.

Q: A passenger jet flies from one airport to another 1,293 miles away in 2.7 h. Find its average speed.…

A: Given data *The given distance is s=1293 miles=1293 miles×1609.344 m1 mile=2.08×106 m *The given…

Q: 1. Voltage = current x resistance. Voltage is measured in volts, current is measured in amperes, and…

A: Given.- voltage and current relationship Voltage=current × resistance  Voltage applied- 3 volts…

Q: Auniform rod 1 m long with weight 6 N can be supported in a hortzontal its ends. What is the…

A: Draw the free-body diagram of the system. Here, x denotes the position of the balance.

Q: This answer is wrong. Please can someone redo this

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

Q: https://www.bartleby.com/questions-and-answers/5.-oil-flows-into-a-tank-according-to-the-rate-ft11-a…

A: For finding out the amount of oil after 12 minutes, we need to find the difference of the oil that…

Q: 1. Put each of the following numbers into scientific notation. a. 0.00000584 # of s. d? b. 245 000…

A: To convert : given numbers into scientific notation

Q: The database says that the answer is incorrect. Is there a different way of solving it?

A: If a star is moving away from us at a velocity v, then its distance from us (according to the Hubble…

Q: Need more figures... what is the ful

A: Acceleration time graph is given below:

Q: A passenger jet flies from one airport to another 1,333 miles away in 2.4 h. Find its average speed.

A: calculation

Q: Derived or Quantity (Symbol) Unit Symbol Fundamental Length (1) 1. meter m Mass (m) kilogram kg 2.…

A:

Q: A microwave oven has a power requirement of 1,243 W. A frozen dinner requires 5.6 min to heat on…

A: The energy consumed by the oven can be obtained as E=Pt=1243W×1kW1000W5.6min×1h60min=0.116kWh

Q: What’s the difference between a law and a theory? People sometimes say, “It’s just a theory. . .” to…

A: Laws of Physics are stated facts that have been deduced and derived based on empirical observations.…

Q: What is the speed, in miles per hour, of a car that travels at 6.30 m/sm/s ?

A: The speed of a car(v) = 6.3 m/s

Q: 23 m/s to km/hr?

A: Given 23 m/s we have to convert into km/hr as we know 1km=1000m so 1 m=11000km 1hr=60 min=3600 sec…

Q: When an object with an electric charge of −0.070mC is 2.0m from an object with an electric charge of…

A:

Q: A car travels 75.95 miles in 9.48 hours. What is the car's average speed?  Round your answer to two…

A: Given,  Distance = 75.95 miles Time = 9.48 hours Average speed =?

Q: In the process of using the scientific method, a researcher: Directly tests both the null and…

A: In scientific method, null hypothesis tests the relation ships between the collected data or which…

Q: 10. During an autopsy, the stomach was removed and the stomach and its contents weighed 1,250 grams.…

A: Weight of stomach was measured to be = 1250 grams

Q: - 40. A 2.00-kilogram mass is at rest on a horizontal surface. The force exerted by the surface on…

A: Part (40): Given: The mass of the object is 2 kg.

Q: SPEAR is a storage ring at the Stanford Linear Accelerator which has a circulating beam of electrons…

A:

Q: rceO 2.

A: Moving currents produce magnetic fields. Due to these fields parallel currents will repel each other…

Q: 10. (a) Refer to Table 1.3 to determine the average distance between the Earth and the Sun. Then…

A: from the table(a)distance of earth from sun , r=1011 mnow assuming that earth goes around sun in…

Q: a paratrooper jumped from a combat ship at a height of 1,324 meters, if he was falling at a speed of…

A:

Q: Suppose you use 57 kWh (kilowatt hours) of electricity at $0.35 per kWH, 91 kWh at $0.26 per kWh,…

A: Given, Electricity usage,  57 kWh of electricity at $0.35 per kWh, 91kWh of electricity at $0.26 per…

Q: Write the following without a prefix: 689 cm 68,900 m O 0.689 m 689 m 6.89 m 689.000 m

A: 689 cm  To show = Without prefix

Q: How much does it cost to operate a dryer for 176 minutes if its power consumption is 1,484 W. The…

A: t= 176 min = 2.933 hours Total kWh = 1.484 x2.933 = 4.4325 kWh

Q: A passenger jet flies from one airport to another 1,313 miles away in 2.3 h. Find its average speed.

A: Distance covered by jet is d = 1313 miles Time t = 2.3 h

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.