& BIO Salmon move upstream In the past, salmon would swim more than 1130 km (700 mi) to spawn at the headwaters of the Salmon River in central Idaho. The trip took about 22 days, and the fish consumed energy at a rate of 2.0 W for each kilogram of body mass. (a) What is the total energy used by a 3.0-kg salmon while making this 22-day trip? (b) About 80 **#x0025; of this energy is released by burning fat and the other 20 % by burning protein. How many grams of fat are burned? One gram of fat releases 3 .8 × 10 4 J of energy. (c) If the salmon is about 15 % fat at the beginning of the trip, how many grams of fat does it have at the end of the trip?
& BIO Salmon move upstream In the past, salmon would swim more than 1130 km (700 mi) to spawn at the headwaters of the Salmon River in central Idaho. The trip took about 22 days, and the fish consumed energy at a rate of 2.0 W for each kilogram of body mass. (a) What is the total energy used by a 3.0-kg salmon while making this 22-day trip? (b) About 80 **#x0025; of this energy is released by burning fat and the other 20 % by burning protein. How many grams of fat are burned? One gram of fat releases 3 .8 × 10 4 J of energy. (c) If the salmon is about 15 % fat at the beginning of the trip, how many grams of fat does it have at the end of the trip?
& BIO Salmon move upstream In the past, salmon would swim more than 1130 km (700 mi) to spawn at the headwaters of the Salmon River in central Idaho. The trip took about 22 days, and the fish consumed energy at a rate of 2.0 W for each kilogram of body mass. (a) What is the total energy used by a 3.0-kg salmon while making this 22-day trip? (b) About
80
**#x0025;
of this energy is released by burning fat and the other
20
%
by burning protein. How many grams of fat are burned? One gram of fat releases
3
.8
×
10
4
J
of energy. (c) If the salmon is about
15
%
fat at the beginning of the trip, how many grams of fat does it have at the end of the trip?
1. An arrangement of three charges is shown below where q₁ = 1.6 × 10-19 C, q2 = -1.6×10-19 C,
and q3 3.2 x 10-19 C.
2 cm
Y
93
92
91
X
3 cm
(a) Calculate the magnitude and direction of the net force on q₁.
(b) Sketch the direction of the forces on qi
(Figure 1)In each case let w be the weight of the suspended crate full of priceless art objects. The strut is uniform and also has weight w
Find the direction of the force exerted on the strut by the pivot in the arrangement (a).
Express your answer in degrees.
Find the tension Tb in the cable in the arrangement (b).
Express your answer in terms of w.
Find the magnitude of the force exerted on the strut by the pivot in the arrangement (b).
Express your answer in terms of w.
(Figure 1)In each case let ww be the weight of the suspended crate full of priceless art objects. The strut is uniform and also has weight w.
Find the direction of the force exerted on the strut by the pivot in the arrangement (b).
Express your answer in degrees.
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