Question

In: Chemistry

Two solid objects, X and Y, of equal masses are placed in a molten lead bath...

Two solid objects, X and Y, of equal masses are placed in a molten lead bath and allowed to reach the bath temperature. (The objects themselves do not melt.) Each object is placed in a separate fish tank containing 1000 kg of water. Object X raises the water temperature by 20 °C while object Y raises the water temperature 80 °C. Which of the following is true? X has a larger specific heat than Y. Y has a larger specific heat than X. Both X and Y have the same heat capacity. Specific heats of X and Y cannot be determined from the given information. X has a specific heat four times that of Y.

a X has a larger specific heat than Y.

b	Y has a larger specific heat than X.

c	Both X and Y have the same heat capacity.

d	Specific heats of X and Y cannot be determined from the given information.

d	X has a specific heat four times that of Y.

Expert Solution

To answer this question first one has to know definition of specific heat, which is

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. The relationship between heat and temperature change is usually expressed in the form shown below where c is the specific heat. The relationship does not apply if a phase change is encountered, because the heat added or removed during a phase change does not change the temperature.

Q = heat added

c = spefcific heat

m = mass

= change in temperature

Now taking two objects X and Y and we know that Each object is placed in a separate fish tank containing 1000 kg of water. Object X raises the water temperature by 20 °C while object Y raises the water temperature 80 °C.

This means that the heat capacity of X to raise the temperature of water by 1 degree celsius is more than the object Y.

Hence option a. is coreect which is, the specific heat of object X is more than Y

queen_honey_blossom answered 2 years ago

Equal masses of gaseous N2 and Ar are placed in separate flasks of equal volumes at...

Equal masses of gaseous N2 and Ar are placed in separate flasks of equal volumes at the same temperature. Tell wheter each of the following statements is true or false. Then explain your answer in each case. A. There are more moleculaes of N2 present than atoms of Ar. B. The pressure is greater in the Ar flask. C. The Ar atoms have greater average speed than te N2 molecules. D. The N2 molecules collide more frequently with the walls...

Three solid objects (A, B, and C) are placed in water. The objects each have constant...

Three solid objects (A, B, and C) are placed in water. The objects each have constant densities of 160, 260, and 745 kg/m3, respectively. a.) How do you immediately know all three objects will float? b.) Find the fraction of the volume submerged for each object. A: B: C: c.) If object C has the dimensions (length=8 m, width=7 m, height=3 m), how far does this object stick out of the water when floating (in this orientation)? m

Two objects of masses m and 8m are moving toward each other along the x-axis with...

Two objects of masses m and 8m are moving toward each other along the x-axis with the same initial speed v0 = 525 m/s. The object with mass m is traveling to the left, and the object with mass 8m is traveling to the right. They undergo an elastic glancing collision such that m is moving downward after the collision at a right angle from its initial direction. What is the final speeds of the two objects m and 8m?...

Two masses are on a horizontal, frictionless surface. The plane of the surface is the x-y...

Two masses are on a horizontal, frictionless surface. The plane of the surface is the x-y plane. Mass m1 = 1.0kg is at rest while mass m2 = 2.0kg is moving in the positive x-direction at 15m/s. The two masses then undergo a collision and mass m2 is moving with a speed of 9.0m/s at an angle of 35 degrees after the collision. 1) What is the speed of the center of mass of the two masses before the collision?...

a) Four masses are placed on the x-axis so that the center of gravity is at...

a) Four masses are placed on the x-axis so that the center of gravity is at x = 0. A 1kg mass is placed at x = 1m, a 2kg mass is placed at x = 2m, a 3kg mass is placed at x = 3m, and lastly an unknown mass m4 is placed at x = −4m. What is the value of the unknown mass? b) If the unknown mass is doubled, what is the new x-coordinate of the...

-Four masses are placed along the x − a x i s as follows. A mass...

-Four masses are placed along the x − a x i s as follows. A mass of 2.0 k g is placed at x = 3.0 m, a mass of 6.0 k g is placed at x = 1.0 m, a mass of 4.0 k g is placed at x = − 2.0 m, and finally a mass of 1.0 k g is placed at x = − 4.0 m. Where is the center of mass of this system of...

Two objects, A and B, are released from rest in free space (no other masses are...

Two objects, A and B, are released from rest in free space (no other masses are near). Object A has a greater mass than object B. They accelerate toward each other under the action of their mutual gravitational attraction. a. On which object is the greater work done? b. At the instant just before they hit, which object will have the momentum with the greatest magnitude? c. At the instant just before they hit, which object will have the greater...

Two objects with masses of m1 = 3.20 kg and m2 = 7.90 kg are connected...

Two objects with masses of m1 = 3.20 kg and m2 = 7.90 kg are connected by a light string that passes over a frictionless pulley, as in the figure below. A string passes over a pulley which is suspended from a horizontal surface. A circular object of mass m1 and a rectangular object of m2 are, respectively, attached to the left and right ends of the string. (a) Determine the tension in the string. N (b) Determine the acceleration...

Two objects with masses of 3.20 kg and 8.00 kg are connected by a light string...

Two objects with masses of 3.20 kg and 8.00 kg are connected by a light string that passes over a frictionless pulley, as in the figure below. (a) Determine the tension in the string. (Enter the magnitude only.) N (b) Determine the acceleration of each object. (Enter the magnitude only.) m/s2 (c) Determine the distance each object will move in the first second of motion if both objects start from rest. m

Four particles are in a 2-D plane with masses, x- and y- positions, and x- and...

Four particles are in a 2-D plane with masses, x- and y- positions, and x- and y- velocities as given in the table below: m x y vx vy 1 7.6 kg -2.6 m -4.7 m 3 m/s -4.1 m/s 2 9.3 kg -3.5 m 3.6 m -4.9 m/s 5 m/s 3 8.9 kg 4.4 m -5.5 m -5.9 m/s 2 m/s 4 8.6 kg 5.4 m 2.5 m 4.2 m/s -2.9 m/s 1) What is the x position of...