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A Carnot heat engine takes 2000J of heat from the high temperature reservoir at 227 degrees Celsius, What is the Carnot efficiency
Object O1 is 14.5 cm to the left of a converging lens with a 12.0-cm focal length. What is the focal length of the second lens
A closed surface is formed from a 3.5-cm radius hemisphere ‘capped' by a flat base. what is the flux (in N m^2/C) through the flat base
An ideal gas initially at 324 K is compressed at a constant pressure of 27 N/m2 from a volume of 3.0m3 to a volume of 1.8m3. what is the final temperature of the gas
A solid, horizontal cylinder of mass 11.0 kg and radius 1.30 m rotates with an angular speed of 8.00 rad/s about a fixed vertical axis through its center. Determine the final angular speed of the sy
A 220-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 37 degrees with the horizontal. What is the angular speed of the sphere
A proton having an initial velocity of 17.2i hat bold Mm/s enters a uniform magnetic field of magnitude 0.360 T with a direction perpendicular to the proton's velocity. Determine the distance the pr
A cart of mass 240 g is placed on a frictionless horizontal air track. A spring having a spring constant of 6.5 N/m is attached between the cart and the left end of the track. Find the period at whi
Describe your local soil structure: is it a mollisol? Ultimisol? Be specific about its characteristics and discuss the role of macroinvertebrates in soil formation and cycling, specifically in temper
Superman leaps in front of Lois Lane to save her from a volley of bullets. In a 1-minute interval, an automatic weapon fires 152 bullets, Find the average force exerted on Superman's chest
An air bubble has a volume of 1.80 cm3 when it is released by a submarine 120 m below the surface of a lake. Find the force exerted by the gas on one of the walls of the container
Describe by specific chemical or biological name each of the three main components of your circuit. Provide references from the scientific literature for where you found details for each of three co
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C), What value of absolute zero does the calibration yield
A straight horizontal pipe with a diameter of 1.0 cm and a length of 47 m carries oil with a coefficient of viscosity of 0.13 N · s/m2. Estimate the maximum flow speed if the flow must be stre
To lift a wire ring of radius 1.95 cm from the surface of a container of blood plasma, a vertical force of 1.79 10-2 N greater than the weight of the ring is required. Find the gauge pressure at the
A spherical weather balloon is filled with hydrogen until its radius is 3.10 m. Its total mass including the instruments it carries is 11.0 kg. Find the buoyant force acting on the balloon
A 65-g ice cube at 0°C is placed in 665 g of water at 30°C. What is the final temperature of the mixture? °C, What is the final temperature of the water after the ice has melted
An unknown substance has a mass of 0.125 kg and an initial temperature of 80.0°C. calculate the specific heat of the unknown substance
What mass of water at 30.0°C must be allowed to come to thermal equilibrium with a 2.15-kg cube of aluminum initially at 1.50 × 102°C to lower the temperature of the aluminum to 77.0&d
Suppose 1.00kg of water at 100 degrees Celsius is mixed with 1.00kg of water at 0 degrees Celsius. What is the total charge in entropy of the mixture
right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out
Logan is given an initial speed of 4.00 m/s down a 20 %u030A incline. when he reaches the bottom of the incline
A 125-cm-long, 5.0 g string oscillates in its n = 2 mode with a frequency of 190 Hz, What is the wavelength in the string
A rectangular loop of wire enter a 2.0 T magnetic field with velocity of 10 m/s, find the direction of the force experience by the wire
Total internal reflection will occur when the refraction angle is 90' degrees or more. find the angle of incidence at which total interanl refraction in water will occur