Springs 1 and 2 are identical. What is the mass of the unknown block, in kg? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. 100 g 10 20 3 Ô

Q: What is the efficiency of a subject on a treadmill who puts out work at the rate of 110 W while…

A: oxygen consumption rate 2 L/m mean power input = 700 Wpower output = 110 W

Q: The work performed as a function of time for a certain process is given by: W = at³, where a = 2…

A:

Q: At sea level a nitrogen molecule has an average translational kinetic energy of 8.7 x 10-21 J. Its…

A: At sea level, a nitrogen molecule has an average translational kinetic energy of 8.7 x 10-21 J. Its…

Q: Ans. (i) 2000 J (ii) 1000 J 18. A truck weighing 1000 kgf changes its speed from 36 km h-¹ to 72 km…

A: Given data, Mass of the truck m = 1000 kg Initial velocity u=36 km/h=36×518=10 m/s Final velocity,…

Q: A circular tank that has a diameter of 16 m and sides that are 8 m high contains water with a depth…

A: The diameter of a circular tank is 16 m. The height of the sides is 8 m. The depth of water is 3 m.…

Q: omrtime R Uncle Jack uses the following device to carry some veggies to sell in town. If mA is 1/10…

A:

Q: 5698.4 in Hg to Mpa 25.95 Watts to in-lb/min 6469 kg/s to Hp 0.689 Hp to Erg/s

A: 5698.4 in Hg to Mpa1 in of Hg=0.00338639 Mpaso,5698.4 in Hg=0.00338639×5698.4 Mpa…

Q: A wire 2.15 m long carries a current of 19.3 A and makes an angle of 44.5° with a uniform magnetic…

A:

Q: How many slices of pizza must you eat to walk for 1.0 h at a speed of 5.0 km/h? (Assume your mass is…

A: The average metabolic power for a 68 Kg individual to walk at the given speed is 380 W and the…

Q: O. 14 : Work done in blowing a soap bubble of diameter 2 cm, is (S.T. = 3 x 10-² N/m) (a) 7.54 x 10…

A: To find-Work done (W)=?Given-Diameter of soap bubble D=2 cmRadius =D2=22=1 cmRadius(r)=1×10-2…

Q: Bob drives a 3500kg truck off a cliff at an initial speed of 11m/s. The truck hit the bottom of the…

A: Answer Truck initial speed u = 11 m/s Truck mass m = 3500 kg  Truck final speed v = 18m/s

Q: A certain amount of fuel produces 15 quads (1 quad=1.055×1018 J) of energy. In how many days the…

A: Given that, amount  of fuel produced = 15 quad  1 quad=1.055×1018 J Note : - i think  demand = 1014…

Q: One watt is 1 joule per second. The woman in the preceding example expends 8.4 kilojoules per hour…

A: It is given that,

Q: A trough is 6 meters long, 3 meters wide, and 5 meters deep. The vertical cross- section of the…

A: Given data: A trough is 6 meters long 3 meters wide and 5 meters deep. The vertical cross-section of…

Q: If work is a scalar quantity, how would explain the negative work done

A: Work is a scalar quantity because it is the dot product of two vectors (Force and displacement),…

Q: A spherical tank of diameter 4 m is half-full of water (weight density = 9800 N/m³). Setup the…

A: The radius of the spherical tank is given as, R=4 m, The weight density of the tank is given as,…

Q: What is the efficiency of a subject on a treadmill who puts out work at the rate of 106 W while…

A: It is given that power input ≡oxygen consumption of 2L/m ≡700W power output = 106 W

Q: A vertical right circular cylindrical tank measures 32 ft high and 18 ft in diameter. It is full of…

A:

Q: Sam lifts a box with a weight of 12 N to a height of 2 meters. (E-S-A is only necessary for Part…

A:

Q: What is the work needed to lift 15kg of water from a well 12m deep ? Asume the water has a constant…

A:

Q: A spherical tank of diameter 4 m is half-full of water (weight density = 9800 N/m³). Setup the…

A:

Q: A force of 5 N exerted on a small piston in a hydraulic press causes an output force of 500 N at the…

A: Force exerted on small piston (f) = 5 N Output force (F) = 500 N

Q: A spherical tank of diameter 4 m is half-full of water (weight density = 9800 N/m³). Setup the…

A:

Q: A car requires 170kiloJoules to accelerate from 23m/s to 28m/s. If this happens over 2 seconds, what…

A: Power is defined as the rate of doing work. Power is a scalar quantity and the SI unit of power is…

Q: 2. Compute the work done against gravity by a pump that discharges 600 liters of fuel oil into a…

A: Please note : As per answering guidelines I can answer the first question only. Since, this is not a…

Q: A tank is full of water. Find the work (in ft-lb) required to pump lb/ft³. (Round your answer to the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A pump is required to lift 800 kg (about 200 gallons) of water per minute from a well 10 meters deep…

A: Given data: Mass of water, m=800 kg Depth of well, h=10 m Speed, v=20 m/s

Q: A trough is 5 meters long, 1.5 meters wide, and 1 meters deep. The vertical cross-section of the…

A: height , h = 1 m length , L = 1.5m base , B = 5m To find = work required to empty the trough .

Q: To measure the spring constant of a certain spring, a student put a mass of 700 g at the bottom of…

A: Spring force is equal to :       F=kX      where x is the spring stretches in centimeter(cm)  and k…

Q: A car requires 170kiloJoules to accelerate from 23m/s to 28m/s. If this happens over 2seconds, what…

A: The required work to accelerate the car is, W=170 kJ The time interval to accelerate the car is, t=2…

Q: Sx, x<-2 br, x2-2 (A) What value should be assigned to b to make the function: g(x) continuous at…

A: A function is continuous iff LHL = RHL = function value at the point of…

Q: Q 23.) A boy of mass 50 kg runs up a staircase of 45 steps in 9 s. If the height of each step is 15…

A: Given that, Mass, m=50 kg The height of each step is 15 cm Height of similar 45 steps=45 x 15 cm…

Q: An aquarium 3 m long, 6 m wide, and 1 m deep is full of water. Find the work (in J) needed to pump…

A:

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!