How much work is done against gravity in lifting a 6.00-kg weight through a distance of $20.0 \mathrm{~cm}$ ?

The human small intestine moves food along its 6.9-m length by means of peristalsis, a contraction and relaxation of muscles that propagate in a wave along the digestive tract. If the average force exerted by peristalsis is $0.18 \mathrm{~N}$, how much work does the small intestine do to move food along its entire length?

The human small intestine moves food along its 6.9 m length by means of peristalsis, a contraction and relaxation of muscles that propagate in a wave along the digestive tract. If the average force exerted by peristalsis is $0.18 \mathrm{~N}$, how much work does the small intestine do to move food along its entire length?

A car of mass $m$ accelerates from rest along a level straight track, not at a constant acceleration but with constant engine power, $P$. Assume that air resistance is negligible. a) Find the car's velocity as a function of time.

A small blimp is used for advertising purposes at a football game. It has a mass of $93.5 \mathrm{~kg}$ and is attached by a towrope to a truck on the ground. The towrope makes an angle of $53.3^{\circ}$ downward from the horizontal, and the blimp hovers at a constant height of $19.5 \mathrm{~m}$ above the ground. The truck moves on a straight line for $840.5 \mathrm{~m}$ on the level surface of the stadium parking lot at a constant velocity of $8.90 \mathrm{~m} / \mathrm{s}$. If the drag coefficient $(K$ in $F=K v^2$ ) is $0.500 \mathrm{~kg} / \mathrm{m}$, how much work is done by the truck in pulling the blimp (assuming there is no wind)?

A car of mass $942.4 \mathrm{~kg}$ accelerates from rest with a constant power output of $140.5 \mathrm{hp}$. Neglecting air resistance, what is the speed of the car after $4.55 \mathrm{~s}$ ?

An engine expends $40.0 \mathrm{hp}$ in moving a car along a level track at a speed of $15.0 \mathrm{~m} / \mathrm{s}$. How large is the total force acting on the car in the direction opposite to the motion of the car?

A student moves a box of books by pulling on a rope attached to a box. The student pulls with a force of $200 \ \text{N}$ horizontally. The box has a mass of $35 \ \text{kg}$, and a coefficient of friction of $0.27$. What is the weight of the box?

Figure shows a train of four blocks of masses m1=10 kg , m2=3 kg, m3=5 kg and m4= 2 kg being pulled across a frictionless floor by force $\vec{F}$. mmass m1 and m2 connected by cord 1, m2 and m3 connected by cord 2 and m3 and m4 is connected by cord 3. What total mass is accelerated to the right by force $\vec{F}$?

"What is the total gravitational potential energy of the three masses in the figure(Figure 1)? Assume m1=20kg, m2=5kg, and m3=5kg. https://session.masteringphysics.com/problemAsset/1385681/6/13_P28.png

Pulling the string on a bow back with a force of $28.7\ \mathrm{lb}$, an archer prepares to shoot an arrow. If the archer pulls in the center of the string, and the angle between the two halves is $138^{\circ}$, what is the tension in the string?

Humpback whales sometimes catch fish by swimming rapidly in a circle, blowing a curtain of bubbles that confuses a school of fish and traps it in a small area, where the whales can easily catch and eat them. Suppose a $\textrm{28,000-kg}$ humpback whale swims at $2.2 \mathrm{~m} / \mathrm{s}$ in a circle of radius $8.5 \mathrm{~m}$. What centripetal force must the whale generate?

To test the effects of high acceleration on the human body, the National Aeronautics and Space Administration (NASA) constructed a large centrifuge at the Manned Spacecraft Center in Houston. Astronauts are placed in a capsule that moves in a circular path with a radius of 15 m. If the astronauts in this centrifuge experience a centripetal acceleration 9.0 times that due to gravity, what is the linear speed of the capsule?

What output is produced by the following code fragment? String m1, m2, m3; m1="Quest for the Holy Grail"; m2=m1.toLowerCase(); m3=m1+" "+m2; System.out.println (m3.replace('h', 'z'));