Rank (from most to least) in the order of power gener- ated by each of the following. (a) a light bulb that emits 200 000 J of energy in 1 h (b) a laser that emits 100 J of energy in 10-6s (c) a lift that pulls 2000 kg of mass to a distance of 20 m in 30 s (d) a runner of mass 90 kg who, starting from rest, attains a speed of 10 m/s in 5 s

Q: With bumpers touching, a 3,773 kg truck is pushing a 1,103 kg car. The truck and the car move…

A:

Q: A pumped water storage plant has a head of 600 m and volume 5 x 10° m². How much potential energy is…

A: Height of Storage tank equal to 600 metre

Q: Calculate the work done (in J) by an 80.0 kg man who pushes a crate 3.95 m up along a ramp that…

A: Given that - Mass of the man Angle Distance Force To Find - We have to determine the work done by…

Q: Calculate the work done by a force of 70 N in lifting a load of 5kg to a height of 10m (g = 10ms2)

A: Work done is calculated as:   Work = Force x Displacement W = F.d…

Q: 20.A force of 40.0 N stretches a spring 20.0 cm. Find the spring constant (in .N/m). Show Working…

A:

Q: Q:-1 The train resistance R (lbs/ton)is measured for the following values of its velocity V(km/hr):…

A: Given the data of train resistance and velocity : Train velocity measured in km/hr Train resistance…

Q: Find the scalar product of the vectors in Figure.

A: The scalar product of two vectors is obtained by multiplying their magnitudes with the cosine of the…

Q: 10. An automobile is sitting on a hill which is 20 m higher than ground level. Find the mass of the…

A: Given: Potential energy = 362600 J  Height = 20 m

Q: 45 20 T2 |Tэ

A: Consider the given diagram.

Q: 1. What amount of work is done when a 5 newton object is moved a distance of 10 meters?

A: Given data:   Force (F) = 5 N Distance (d) = 10 m Required: Work done (W)

Q: a stone is dropped from rest from the top of the wall (34.2m) at the start of the drop the GPE was…

A:

Q: A truck is carrying 1.35 tonne of calcium carbonate to a sugar industry located on top of the hill.…

A: SOlution: Given that mass of CaCO3 = 1.35 Tonne U at halway mark is = 689 kJ h = 25 m

Q: Mountain highways with long descents have “escape” roads with  a steep incline for vehicles to take…

A: Angle, θ = 49°Mass, m = 20,000 lbSpeed, v = 64 mph = 64×0.447 mph = 28.61 m/s

Q: The parachute on a race car of weight 8,850 N opens at the end of a quarter-mile run when the car is…

A: Write the kinematic equation for velocity.

Q: .. A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long.…

A: Work done, W = F.d

Q: An object with a mass of 4kg lies on a rough plane inclined at 20 degrees to horizontal. A force of…

A: mass =4 kg  angle = 20oF = 35 N a = 2.5 m/s2

Q: What vector quantities do you use in your daily life?

A: The physical quantities which consist of magnitude as well direction are known as vector quantities.…

Q: 4. A spring has a natural length of 18 inches and a force of 20 lbs is required to stretch and hold…

A:

Q: A trailer of mass 20 ton is given a uniform acceleration while travelling on a level road. The…

A: Given data: Mass of the trailer, m=20 ton = 20×907.185 kg = 18143.7 kg Initial velocity, u=16 kph =…

Q: what force acts on a 1,150kg car travelling at a velocity of 23.0m/s when the brakes are applied,…

A: Given, Mass of the car = 1150 kg = m Velocity of the moving car = 23 m/s = u (initial velocity)…

Q: Compute and provide solution 1. A 23.2 kg boy fell 0.900 m out of the bed. Hom much potential…

A: Given, Mass = 23.2 kg Height = 0.900 m

Q: How much work is done by a machine to lift 750 kg of bricks to a height of 8.2 m?

A: Work done = gain in the potential energy by the bricks = m×g×h Here, m= 750 kg            g= 10 m/s2…

Q: Consider a lightbulb rated for a power of 20 watts. This lightbulb consumes a certain amount of…

A:

Q: A stone is dropped from the top of a tower and falls to the ground below. If the stone hits the…

A:

Q: A truck weighing 41,800 lbs drives up a 18 degree inclined truck ramp with gravel that creates a…

A:

Q: A jet aircraft with a mass of 4,675 kg has an engine that exerts a force (thrust) equal to 59,400 N.…

A: Data Given ,  Mass of the aircraft ( m ) = 4675 kg Force ( F ) = 59400 N Time ( t ) = 7 s Let ,…

Q: 4. An object with mass 23kg falls from 249m and hits the ground. What is its PE before it begins to…

A: Given data: The mass of object is m=23 kg. Height from ground is h=249 m.

Q: A force of 144N acting on a 2.0 kg object initially at rest moves it through a parallel distance of…

A: Given:force acting parallel to displacement, F = 144 Nmass of the object, m = 2.0 kgdisplacement, d…

Q: 2W -b- C a Fig. 3-10 F a- B W

A:

Q: If you pushed a cart for 3.34 meters along an incline of angle 11.51 by applying a force of 29.67…

A:

Q: xplains the physical reasons why the speed of a vehicle must be moderate and commensurate with the…

A: The speed of a vehicle must be moderate and commensurate with the weather and road conditions for…

Q: A 5.4 kg ball with a diameter of 11 cm is dropped form an airplane at an altitude of 9 km above the…

A: Given: Mass of ball m = 5.4 kg Diameter of ball d = 11 cm = 0.11 m Altitude from where the ball is…

Q: Show the fbd/figure, given and formula used. If energy cost 5 cents per kilowatt-hour, how much is…

A: Given: Energy cost =5 cents /kWh Standard data used: 1 kWh=1.34 hph

Q: In the figure shown, if the mass (m=7 Kg) is moving with constant speed and traveled a distance d=10…

A:

Q: How much work (in ft lb) is done by a large bucket that can lift 4.5 tons of dirt 14ft into the air…

A:

Q: 5. In each case, find the x- and y-components of vector : (a) A= 3.20 +6.50); (b) A 18.2ĵ-7.91î; =…

A:

Q: If a certain brand of solar panels is rated at a value of 1.50 KW/m2 , and a person needed to…

A:

Q: How much work should a 2000kg truck produce to drive a 278 km highway if an average force if 474N…

A: Given  Mass of truck (m) =2000 kg  Average force exerted by truck to overcome friction (F) = 474N…

Q: Question 10) Sasha pushes a 15 kg cart full of donated books through a 5.0 m fong starting area. The…

A: Given data The mass of the cart is m = 15 kg The starting distance of the cart is d = 5 m The…

Q: A car moving at 60 km/h skids 20 m with locked brakes. How far will the car skid with locked brakes…

A: Write the given values with the suitable variables. v1=60 km/hl1=20 mv2=120 km/h Here, v1, l1, and…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!