A cube of ice is taken from the freezer at -7.4°C and placed in a 97 g silver cup filled with 273 g of water. Both the water & the cup are at 21.3°C. Eventually the system reaches thermal equilibrium at 8.4°C. Determine Qcups, Qwater (for the water initially in the cup), Qice, & the mass of the ice. Qcup = Qwater Qice mice =

Q: In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some…

A: Rest mass of rocket, mo = 20,000kg =2 x104 kg Speed needed to be achieved, v=0.99913 c

Q: Consider: R₁ = 100 ohms R₂ = 5000 ohms Note: Follow the polarity and direction of the loop. 10002…

A:

Q: 21-25 A body is projected with an initial velocity of 25.5 m/s at 30° below the horizontal. Find a.)…

A: Given: Initial velocity of the body, u = 25.5 m/sec angle of elevation, θ = 30°

Q: Two freight cars, each with a mass of 10000kg collide. One was initially moving at 10m/s while the…

A: Given data:  Two freight car collide and stick together  m1 = m2 = 10000 kg V1 = 10 m/s and V2 = 0…

Q: When a material has a negative temperature coefficient of resistance, O It has a negative resistance…

A: Given data :- It is given that a material has a negative temperatures coefficient of resistance…

Q: Given an ideal transformer connected to a V1 = 260 V AC source supplying a V2 = 14 V on a device.…

A: Given: V1=260 VV2=14 V

Q: 5. F = x²i+czj- yk If the force is conservative, the value of the constant c is A. -2 B. 3 C. -5 D.…

A:

Q: 102.00 L Density (kg/L) 0.40 kg/L 0 Human Glass 2.00 kg Titanium Steel Copper 10 Wood Mass Volume A…

A:

Q: Two infinite, straight wires carrying different amount of currents are placed as shown in the…

A:

Q: One (1) weber is the same as 1V.s 1T-s 1T/m 1T/m²

A: weber is defined as the unit of magnetic flux  thus 1Wb is equal to  1T*m2  thus options B, C and D…

Q: One long wire lies along an x axis and carries a current of 53 A in the positive x direction. A…

A:

Q: Q3/A point charge of 12nC is located at the origion. Four uniform line charges are located in the…

A:

Q: migrating salmon heads in the direction N 45 degrees * E swimming at 2.m/h relative to the waterThe…

A: migrating salmon heads in the direction N 45 degrees * E swimming at 2.m/h relative to the waterThe…

Q: A steaming pot of water is resting on a red hot burner is that convection?

A: Convection is the process of heat transfer in fluid through currents.

Q: are given a length of uniform heating wire made of a nickel–chromium–iron alloy called Nichrome; it…

A: GivenResistance, R=79.03 ΩPotential difference, V=115 V

Q: A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 31m high. When it hits…

A: Given Mass of the rock is m=0.26 kg Height of the cliff is h=31 m Final speed of the rock is vf=33…

Q: The mirror shown in this photo is a concave mirror. Use that information and the photo to answer the…

A:

Q: A ball has a mass of 10Kg, suppose it travels at 100m/s. Find the kinetic energy possessed by it.

A:

Q: A bicycle wheel rotating in a clockwise manner has an initial angular velocity of 1.50 rad/s.  If…

A:

Q: c) The equation below describes the disintegration of a polonium nucleus into a lead nucleus and an…

A:

Q: A car that has a mass of 1500 kg and a velocity of 25 m/s, find the momentum ?

A: Given Mass of car m = 1500 kg Velocity of  car v = 25 m/s To find Momentum of car

Q: 100 N 4. what OBJECT A 20 ока - 5k6 100 N variable in object N different from object $7 и a 15 the…

A: Relationship between force and acceleration:

Q: How much work must be done by frictional forces in slowing a 1555 kg car from 13.3 m/s to rest?

A: Given Data: The mass of the car is: m=1555 kg The velocity of the car is: u=13.3 m/s The final…

Q: Determine the momentum of a car having mass 120 kg moving with a velocity 14 m/s

A: Given:  Mass (m) = 120 kg Velocity (v) = 14 m/s Asked: Momentum (P)

Q: A block of mass m1=2.40kg is connected to a second block of mass m2=1.80kg. The two masses start…

A:

Q: Determine the value of pressure Force=2 N Area 0.5 m2

A: Given data:  Force (F) = 2 N Area (A) = 0.5 m2 Required: Pressure (P)

Q: Bulbs convert the energy of moving charge to light and heat True or False?

A: Energy conversion in light bulb:

Q: A portion of a circuit is shown, with the values of the currents given for some branches. 12A ↑ 3A ↑…

A:

Q: Suppose a lens is placed in a device that determines its power as 2.86 diopters. (a) Find the focal…

A: Given Data: The power of the lens is: P=2.86 D The near point of the patient is: v=-32.0 cm

Q: In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some…

A: Initially mass of rocket, mo = 20,000 kg Speed of the rocket, v=0.99913 c Total energy used by…

Q: The sun radiates energy at the rate 3.8 x 1026 W. The source of this energy is fusion, a nuclear…

A: The sun's lifetime is 15 billion years.

Q: A square loop of wire with a side length of 1.35 [m] is in a uniform magnetic field that has an…

A:

Q: If the height of the water slide is h = 3.8m, and the person's initial speed at the top is 0.70m/s ,…

A: Given Data: The height of the water slide is: h=3.8 m The initial speed of the person is: u=0.70 m/s

Q: The primary mirror on a telescope has a 52 m radius of curvature and the eyepiece has a focal length…

A:

Q: Consider a proton that is incident on a target proton (at rest). What is the threshold energy needed…

A:

Q: 3. F = xz²i + (1 − 3xy)j + yzk, A. xyi + 2yzj - 3yk B. zi + 2xzj - 3yk C. zi + 2zj3xk D. xi + 2yzj -…

A: Given, Force, F→ = xz2 i^ + 1-3xyj^ + yz k^

Q: A fire truck ladder is 20 m long, weighs 28000 N, has its center of gravity at its center, and can…

A: The free-body diagram of the ladder is shown below.

Q: A crate is moved by force 4 N. The crate moves distance of 00.36 m. Determine the work done

A: Given data :- Force F = 4 N distance/displacement d = 00.36 m

Q: A boll rounds a 28 m radius curve at 13 m/s. The magnitude of it's acceleration in m/s²

A: Given, Radius of curve (R)= 28m Speed of boll (v)= 13 m/s

Q: Suppose a magnetic field pointing in the +z-direction is increasing at a rate of 0.3 T/s inside a…

A:

Q: Given that Vis the voltage across the resistor and / is the current through the resistor, the energy…

A: Given data:  Voltage across resistor = V Current through resistor = I Resistance = R Required:…

Q: An individual is nearsighted; his near point is 18.0 cm and his far point is 42.0 cm. (a) What lens…

A:

Q: An AC voltage of the form Av = 65 sin 345t where Av is in volts and t is in seconds, is applied to a…

A:

Q: How large a net force is required to accelerate a 1597 kg suv from rest to a speed of 7.9m/s in a…

A:

Q: Leonard kicked a 0.50 [kg] ball off the rooftop of a building that is 81.0 [m] tall. He oriented the…

A: mass of ball (m) = 0.50 kg initial height (h) = 81 m launch angle = 45oinitial speed = 15 msheight…

Q: The gravity of Jupiter is about 3 times what it is on Earth.  If an object’s mass is 180 kg on…

A: Given data:- The gravity of Jupiter is about 3 times what it is on Earth object’s mass is 180 kg on…

Q: Imagine a long straight wire and above it is a circular loop of wire. If a current passing through…

A: Imagine a long straight wire and above it is a circular loop of wire. If a current passing through…

Q: Calculate for the energy of separation of n=3 and n=2 of a hydrogen atom.

A:

Q: At a given time t in an LC circuit, the energy in the capacitor is 25.0% of the energy in the…

A: At t =0 , capacitor is fully charged i.e. all energy is in form of electrical energy stored in…

Q: 4. What are the considerations in determining the direction of the induced current? 5. What…

A: Answer:-  Answer (4)  The induced current must be counter clockwise. If the bar moves in the…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.