Amount of energy required to blow a bubble of radius 5 cm, (surface tension of soap is 30 x 10-2 N/m) (a) (c) 1.88 J 1.88 x 10-2 J (d) 1.88 × 10 J (b) 1.88 x 10-¹ J
Q: A 200 foot chain hangs over the edge of a tall building. The chain weighs 2.5 pounds per foot. There…
A:
Q: 1. Drops frequently form above the ocean by the mechanical disruption of waves in strong winds. How…
A:
Q: The potential energy due to two particles separated by distance ris -- where a and B are constants.…
A: thank you
Q: A certain cloud at an altitude of 1.75 km contains 3.2x107 kg of water vapor. What time it would…
A: Given, Clouds are at an altitude of, h = 1.75 kmmass of the water vapor, m = 3.2 ×107 kgPower of the…
Q: If a skater with a mass of 50 kg is at rest at the top of a ramp and has 4000 J of GPE, how high up…
A: Given The mass of the skater is m = 50 kg. The gravitational potential energy is GPE=4000 J. The…
Q: Calculate A) the conservative force described by the potential energy function U(x,y,z) = ½ k (2x³…
A: We have given a potential energy U(x,y,z)=1/2k(2x3+5y2-3z4) We know that a conservative force can we…
Q: In 1990, Walter Arfeuille of Belgium lifted a 281.5 - kg object through a distance of 17.1cm using…
A: Given data: Mass (m) = 281.5 kg Height (h) = 17.1 cm = 0.171 m The speed of the object is constant…
Q: A 75-g bullet is fired from a rifle having a barrel 0.580 m long. Choose the origin to be at the…
A: Mass of the bullet , m = 75 gm = 0.075 kg Rifle barrel , x = 0.580 m F(x) = 16000 + 10000x -…
Q: A body of mass m falls down through a height h. Obtain an expression for the work done by the force…
A:
Q: 14) As the time needed to run up a flight of stairs deceases, the amount of work done by gravity; a)…
A: Given : As the time needed to run up a flight of stairs decreases, Find:- The amount of work done…
Q: Q8 (a) (1) Distinguish between renewable and non-renewable energy sources giving an example of each…
A: We are allowed to answer only the first question. For solutions to other questions, please re-post…
Q: You place a wooden 1 meter ruler flat on a table. You place a penny flat on the ruler and exactly…
A: Given quantities: Mass of the penny (m) = 2.5 grams coefficient of friction between wood and metal…
Q: A car (m=1000 kg) is initially moving at a speed of 20 m/s (~45 mph) when the driver hits the brakes…
A: Work done is equal to change in kinetic energy W=∆EK=12mvf2-vi2=121000 kg0-20 ms2=-200000 J=-200 kJ
Q: 18. A 100-g bullet is fired from a rifle having a barrel 0.600 m long. Choose the origin to be at…
A:
Q: m A person is pushing a wooden crate of mass mo = 20 kg at a constant speed vo = 1.2– for Ax = 3 m…
A: Given: Mass of the wooden crate, mo = 20 kg Speed of the crate, vo = 1.2 m/s Distance moved, ∆x = 3…
Q: A tennis Ball bounces on the floor three times, and 23% of its kinectic energy is lost and…
A:
Q: 1. Some species of whales can dive to depths of 800m. What is the total pressure they experience at…
A:
Q: How far must you stretch a spring with k = 1700 N/m to store 210 J of energy?
A: Data Given , Potential energy of spring ( P.E ) = 210 Jk = 1700 N/mWe know that , Potential energy…
Q: (a) What is the efficiency of an out-of-condition professor who does 2.30 ✕ 105 J of useful work…
A: Given: (a) Input energy, Q = 510 kcal = 510 x 1000 x 4.2 = 21.42 x 105 J output work, W = 2.30 x…
Q: A 150-g particle on the inside of a smooth hemispherical bowl of radius R 35.0 cm (see the figure…
A:
Q: 13)? 30° P 20 8.0m An external torce F-130 Wis applied ata downward 0=30° to Surface. The force acts…
A:
Q: If it requires 6.0J of work to stretch a particular spring by 2.0 cm from its equilibrium length,…
A:
Step by step
Solved in 2 steps
- 6. Determine the approximate work rate (in Mets) for running on a treadmill at a speed of 5.0 mph and a 4% grade elevation. What is the total caloric cost (kcal) for 190 lb man exercising for 30 minutes at this workrate?(a) A steel ball of mass 0.2 kg is projected vertically upwards, from the top of a building 100 m high, with an initial velocity of 40 m.s. Ignore air frietion and calculate: i. the total mechanical energy of the ball the time it was projected. ii. the total mechanical energy of the ball the time it reached the ground level (i.e at the bottom of the building) -1 iii. the total mechanical energy of the ball the time it reaches its maximum height above the ground. iv. the velocity of the ball the time it reached the ground level v. time taken by the ball to reach the ground level from the time it was projected vi. the maximum height above the ground the ball reached vii. the velocity of the ball the time it was 20 m above the ground (b) Two objects of mass 12 kg and 8 kg respectively move towards each other at velocities 10 m.s and 5 m.s respectively. If the objects unite during collision, calculate the resultant velocity. Page 54) under the the force is (b) 4 J (d) 8 J (a) 2J (c) 16 J
- Please answer within 90 minutes.The energy of a system always remains ?constant. always increases . decreases when work is done on the system . decreases when work is done by the system .27.The potential energy function for either one of the two atoms in a diatomic molecule is often approximated by U (x)=-a/x¹² -b/x6 where x is the distance between the atoms. (a) At what distance of seperation does the potential energy have a local minimum (not at x = ¥)?(b) What is the force on an atom at this separation? (c) How does the force vary with the separation distance? Solution a. -2a b 1/6 ; b. 0; c. ~x6
- How can the total energy remain constant even when it changes forms and from system to system?3. A crate of mass 10.0 kg is puiled up a rougn incine with an initial speed of 1.5 m/s the pulling force is 100 N parallel to the incline, which makes an angle of 20 with the horizontal. The coefficient of kinetic friction Is 04, and the crate is puiled 5.0 m (a) How much work is done by the gravitational force on the crate? (b) Determine the increase in internal energy of the crate-incline system owing to friction. (c) How much work is done by the 100-N force on the crate? (e) What is the speed of the crate after being pulled 5.0 m?