Required information Yosemite Falls in California is about 0.740 km high. What average power would it take for a 57.0-kg person to hike up to the top of Yosemite Falls in 1.50 h?
W
Required information Yosemite Falls in California is about 0.740 km high. What average power would it...
36) (a) What is the average useful power output of a person who does 6.00 x 10^6 J of useful work in 8.00 h? (b) Working at this rate, how long will it take this person to lift 2000 kg of bricks 1.50 m to a platform? (Work done to lift his body can be omitted because it is not considered useful output here.)
What average force is required to stop a 950 -Kg car at 95 Km/h?
What time is required to travel a distance of 330 km along a freeway at the following constant speeds? -(a) 53.5 km/h -(b) 57.0 km/h Compute the average speed in m/s of a runner who completes a mile in 3.88 min? A force directed 54.1° below the positive x-axis has an x component of 5.02 lb. Find its y component. A certain vector A, of magnitude 5.49 units, points in a direction 31.0° to the left of the negative y-axis....
Question 9 (1 point) An airplane, with the mass of 5,713 kg, is about to take off. It taxis 2.28 km [E], then 1.52 km [N], then 4.14 km [W] on the runway before it takes off. From the beginning of taxiing it takes 42.5 min until the airplane takes off. What is the average speed of the airplane in km/h? Enter your answer up to 5 decimal places.
---O (11011 0 JOUUDIO m w your nand)? t= sec = _min (keep 2 significant digits in your answers to this problem). Long range big guns can shoot a shell at the muzzle speed about 1.50 km/sec. How far can this shell go if shot directly up? h= km= miles. How long would it be in the air? t = sec = min :) If there were no air drag, at what speed would raindrops hit the ground when they...
Question 51 point) An airplane, with the mass of 6,641 kg, is about to take off. It taxis 2.18 km [E], then 1.83 km , then 4.88 km [W] on the runway before it takes off. From the beginning of taxiing it takes 45.7 min until the airplane takes off. What is the average speed of the airplane in km/h? Enter your answer up to 5 decimal places. Do not enter units. Your Answer: Answer Question 6 (1 point) The...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
2. A car accelerates along a straight road from rest to 90 km/h in 5.0s. What is the magnitude of average acceleration in meters per second squared. 3. If you are driving 110km/h along a straight road and look to the side for 2.0s, how far do you travel during this inattentive period? 4. At highway speeds, a particular car is capable of accelerating at about 1.8m/s?. At this rate, how long does it take to accelerate from 80km/h to...
What are the Solutions to Part B of Chapter 2 of Tillery Physics 9th edition.......kinda pointless for you guys to only have the solutions that the book has already. 1. What was the average speed in km/h of a car that travels 400.0 km in 4.5 h? 2. What was the average speed in km/h of a boat that moves 15.0 km across a lake in 45 min? 3. How much would a 80.0 kg person weigh (a) on Mars,...
1. A college student produces about 126 kcal of heat per hour on the average. What is the rate of energy production in joules? __________kJ/h 2. On a brisk walk, a person burns about 330 Cal/h. At this rate, how many hours of brisk walking would it take to lose 1 lb of body fat? (A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal.) __________ h 3.How much heat is necessary to change 495...